datagridview的数据源的操作

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Collections;

namespace TechnologyProject.项目管理.加计扣除.ERP导入
{
    public partial class superDeduction : Form
    {
        DataGridViewRow row = new DataGridViewRow();//科研项目表的选红行
        DataSet ds_Data = new DataSet();//excel DS
        DataTable datatable_ERP = null;//ERP导入DS

        Hashtable hs_superDeductionERP = new Hashtable();//datagridview
        public superDeduction()
        {
            InitializeComponent();
            this.cmbMatchShow.SelectedIndex = 0;
            hs_superDeductionERP.Add("ID", "ID");
            hs_superDeductionERP.Add("项目唯一标识", "kj9000a");
            hs_superDeductionERP.Add("局级项目编号", "kj0065a");
            hs_superDeductionERP.Add("厂处级项目编号", "kj0068a");
            hs_superDeductionERP.Add("项目名称", "kj8101a");
            hs_superDeductionERP.Add("项目内码", "kj8102a");
            hs_superDeductionERP.Add("项目编号", "kj8103a");
            hs_superDeductionERP.Add("二级单位", "kj8104a");
            hs_superDeductionERP.Add("专业", "kj8105a");
            hs_superDeductionERP.Add("项目级别", "kj8106a");
            hs_superDeductionERP.Add("年度", "kj8107a");
            hs_superDeductionERP.Add("标识", "kj8108a");
            hs_superDeductionERP.Add("加计扣除标识", "kj8128a");
            hs_superDeductionERP.Add("加计扣除类型", "kj8129a");
            hs_superDeductionERP.Add("条款内容", "kj8130a");
            hs_superDeductionERP.Add("8大项类型", "kj8403a");
            hs_superDeductionERP.Add("金额", "kj8114a");
            hs_superDeductionERP.Add("备注", "kj8115a");

            btnCheck.Enabled = false;
            btnSave.Enabled = false;
        }
        public void FormShow(DataGridViewRow Srow)
        {
            row = Srow;
            this.ShowDialog();
        }

        #region 选择Excel
        private void btnChoose_Click(object sender, EventArgs e)
        {
            try
            {
                OpenFileDialog openFD = new OpenFileDialog();//打开文件
                openFD.Filter = "所有 Office Excel 文件|(*.xls;*.xl*;*.xlt;*.xlsx;*.xlc;*.xlw)";//选择器
                if (openFD.ShowDialog() != DialogResult.OK)
                    return;
                this.txtPath.Text = openFD.FileName;
                if (!System.IO.File.Exists(this.txtPath.Text))//如果要导入的名字和选中的不同,返回
                    return;

                PrintStatement print = new PrintStatement();
                string filedir = string.Empty;

                string[] tablenames = print.Print_ERP导入(ref ds_Data, this.txtPath.Text);//数据源和路径

                if (tablenames == null)
                    return;

                SetAllSheet(tablenames);//通过数据库文件路径获取所有的Excel工作簿名称
                btnCheck.Enabled = true;
            }
            catch (Exception ex)
            {

            }
        }

        /// <summary>获取所有的Excel工作簿名称</summary>
        void SetAllSheet(string[] tabnames)
        {
            datatable_ERP = SetDT(ds_Data);//处理excel DS
            BindDataSource(datatable_ERP);
        }

        //处理数据表
        private DataTable SetDT(DataSet ds)
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("kj0083a");//项目名称
            dt.Columns.Add("kj8403a");//8大项类型
            dt.Columns.Add("kj8114a");//金额
            dt.Columns.Add("kj0086a");//专业
            dt.Columns.Add("kj0087a");//年度
            dt.Columns.Add("kj0084a");//项目级别
            dt.Columns.Add("kj9000a");//项目唯一标识
            dt.Columns.Add("kj0065a");//局级项目编号
            dt.Columns.Add("kj0068a");//厂处级项目编号
            dt.Columns.Add("kj8128a");//加计扣除标识
            dt.Columns.Add("kj8129a");//加计扣除类型
            dt.Columns.Add("kj8130a");//条款内容
            dt.Columns.Add("kj8112a");//八大项内码
            dt.Columns.Add("kj8113a");//排序号
            DataTable dtData = ds.Tables[0];
            for (int i = 0, j = 0; i < dtData.Rows.Count; i++)
            {
                if (string.IsNullOrEmpty(dtData.Rows[i][0].ToString()))
                {
                    continue;
                }//如果8大项类型为空,Excel导入的DataTable开始循环下一行,跳出当前i的所在循环

                dt.Rows.Add();
                dt.Rows[j]["kj0083a"] = row.Cells["xmmc"].Value.ToString();//项目名称
                dt.Rows[j]["kj0086a"] = row.Cells["zy"].Value.ToString();//专业
                dt.Rows[j]["kj0087a"] = row.Cells["nd"].Value.ToString();//年度
                dt.Rows[j]["kj0084a"] = row.Cells["xmjb"].Value.ToString();//项目级别
                dt.Rows[j]["kj8403a"] = dtData.Rows[i][0];//8大项类型
                dt.Rows[j]["kj8114a"] = dtData.Rows[i][1];//金额
                dt.Rows[j]["kj9000a"] = row.Cells["ID"].Value.ToString();//项目唯一标识
                dt.Rows[j]["kj0065a"] = row.Cells["kj0065a"].Value.ToString();//局级项目编号
                dt.Rows[j]["kj0068a"] = row.Cells["kj0068a"].Value.ToString();//厂处级项目编号
                dt.Rows[j]["kj8128a"] = row.Cells["kj8128a"].Value.ToString();//加计扣除标识
                dt.Rows[j]["kj8129a"] = row.Cells["kj8129a"].Value.ToString();//加计扣除类型
                dt.Rows[j]["kj8130a"] = row.Cells["kj8130a"].Value.ToString();//条款内容
                j++;
            }
            return dt;
        }

        //绑定数据源
        private void BindDataSource(DataTable dtSource)
        {
            this.dataGV1.AutoGenerateColumns = false;
            dataGV1.DataSource = dtSource;
        }
        #endregion

        #region 显示匹配项改变事件
        private void cmbMatchShow_SelectedIndexChanged(object sender, EventArgs e)
        {
            try
            {
                BindDataSouce(cmbMatchShow.Text);

                SetDGVColor();
            }
            catch (Exception ex)
            {

            }
        }
        public void BindDataSouce(string combotext)
        {
            string RowFilter = string.Empty;
            DataView dv = datatable_ERP.DefaultView;
            if (combotext == "已匹配")
                RowFilter = "Flag is not null";
            else if (combotext == "未匹配")
                RowFilter = "Flag is null";

            dv.RowFilter = RowFilter;

            this.dataGV1.AutoGenerateColumns = false;
            this.dataGV1.DataSource = dv;
        }
        public void SetDGVColor()
        {
            //改变当前单元格的颜色
            foreach (DataGridViewRow dgvr in this.dataGV1.Rows)
            {
                DataRowView drv = (DataRowView)dgvr.DataBoundItem;
                if (string.IsNullOrEmpty(drv["Flag"].ToString()))
                    dgvr.DefaultCellStyle.ForeColor = System.Drawing.Color.Black;
                else
                    dgvr.DefaultCellStyle.ForeColor = System.Drawing.Color.Blue;
            }
        }

        #endregion

        #region 导入数据
        private void btnSave_Click(object sender, EventArgs e)
        {
            try
            {
                if (dataGV1.CurrentRow == null) return;
                Cursor.Current = Cursors.WaitCursor;
                DataSet ds = new DataSet();//实例化一个ds
                DataTable dt = datatable_ERP.Copy();//将datagridview的datatable复制,再赋给dt
                DataView dv = dt.DefaultView;//将dt的默认表的视图赋给dv
                dv.RowFilter = "Flag is  null";//dataview的过滤器,Flag不等于空,排除Row的方法
                dt.Columns.Remove("Flag");//排除列的方法
                dt.Columns.Remove("kj8403a");
                ds.Tables.Add(dv.ToTable());//将dv转换为表,加到ds里
                OperaterClass.NewInsert(Const.LISTNAME_JJCC, Const.CONTENTTYPE_JJCC, ref ds, UserInfo.Department);

                this.btnSave.Enabled = false;
                this.btnCheck.Enabled = false;
                MessageBox.Show("已成功导入 " + ds.Tables[0].Rows.Count + " 条信息!", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            catch (Exception ex)
            {
                MessageBox.Show("ERP数据导入失败!

请检查您选择的Excel模板是否正确!

。系统提示:" + ex.Message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }
        #endregion

        #region 检查数据
        private void btnCheck_Click(object sender, EventArgs e)
        {
            /*如何在一个datagridview中绑定数据源拼凑成另一张表
             * 数据源本身来源于一个导入的Excel数据源和传入的DataRow数据组成的一张DataTable,
             * 利用Excel数据源内容从字典表中查到的id,id加到目前的DataTable
             * 将这个DataTable的数据存到数据库中
             * for()循环要查的内容dr
             * {
             *      for()固定的数据字典dr
             *      {break;}内容在数据字典中找到,得到id,break跳出for循环
             *      
             *      for()用得到的id到另一张表中查询,如果有表示查询到了数据,isExists = true,dr
             *      {}
             *      
             *      如果isExists = true,在内容表中标记这列为已将存在
             *      将id加到内容dr中     
             * }
             */
            try
            {
                btnSave.Enabled = true;
                //得到八大项字典表数据
                DataTable dtBDX = OperaterClass.SearchData(Const.LISTNAME_JJKC8DXZDB, Const.CONTENTTYPE_JJKC8DX, "", null).Tables[0];

                //根据项目名称,得到该项目对应的所有加计扣除列表数据
                CamlBuilder cbl = new CamlBuilder();
                cbl.AddWhere("Eq", "kj0083a", row.Cells["xmmc"].Value.ToString(), "Text");
                //DataTable dtJJKC = OperaterClass.SearchData(Const.LISTNAME_JJCC, Const.CONTENTTYPE_JJCC, cbl.GetCamlString(), null).Tables[0];
                DataSet dsJJKC = OperaterClass.SearchData(Const.LISTNAME_JJCC, Const.CONTENTTYPE_JJCC, cbl.GetCamlString(), null);
                DataTable dtJJKC = new DataTable();
                if (dsJJKC != null)
                {
                     dtJJKC = dsJJKC.Tables[0];
                }
                datatable_ERP.Columns.Add("Flag");//标识列,表示改加计扣除项是否存在
                for (int i = 0; i < datatable_ERP.Rows.Count; i++)
                {
                    string id = string.Empty;//8大项ID
                    string paNum = string.Empty;//排序号
                    string lx = datatable_ERP.Rows[i]["kj8403a"].ToString();//8大项类型
                    for (int j = 0; j < dtBDX.Rows.Count; j++)
                    {
                        if (lx == "1、仪器" && dtBDX.Rows[j]["kj8402a"].ToString() == "10")
                        {
                            lx = "1、仪器1";
                        }
                        else if (lx == "2、设备" && dtBDX.Rows[j]["kj8402a"].ToString() == "10")
                        {
                            lx = "2、设备1";
                        }
                        else if (lx == "1、仪器" && dtBDX.Rows[j]["kj8402a"].ToString() == "13")
                        {
                            lx = "1、仪器2";
                        }
                        else if (lx == "2、设备" && dtBDX.Rows[j]["kj8402a"].ToString() == "13")
                        {
                            lx = "2、设备2";
                        }
                        if (lx == dtBDX.Rows[j]["kj8403a"].ToString())
                        {
                            id = dtBDX.Rows[j]["ID"].ToString();
                            paNum = dtBDX.Rows[j]["kj8405a"].ToString();
                        }
                        if (!string.IsNullOrEmpty(id)) break;//如果找到了,就跳出for循环
                    }
                    bool isExists = false;//加计扣除项是否存在
                    for (int k = 0; k < dtJJKC.Rows.Count; k++)
                    {
                        if (id == dtJJKC.Rows[k]["kj8112a"].ToString())
                            isExists = true;
                        if (isExists) break;
                    }
                    if (isExists)
                    {
                        datatable_ERP.Rows[i]["Flag"] = "1";
                    }
                    datatable_ERP.Rows[i]["kj8112a"] = id;
                    datatable_ERP.Rows[i]["kj8113a"] = paNum;
                    id = string.Empty;
                    paNum = string.Empty;
                }

                BindDataSouce(cmbMatchShow.Text);
                SetDGVColor();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        #endregion

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }

    }
}

 

 break,return,continue的使用区别

continue是跳出开始循环的一次新迭代,如下:

for(var i=1;i<=10;i++) 
{
  
if(i==6)
  {
    continue;
  } document.write(i); }
//输出结果:1234578910

break是跳出包含在最内层循环的循环体或者退出一个switch语句,如下:

for(var i=1;i<=10;i++) 
{ 
  
if(i==6)
  {
  break;
  } document.write(i); }
//输出结果:12345

在datagridview中查找到某条数据,更改这条数据

        if (UpdataDataSet != null && UpdataDataSet.Tables.Count != 0 && UpdataDataSet.Tables[0].Rows.Count != 0)
                {
                    //2013年11月7号
                    for (int i = 0; i < UpdataDataSet.Tables[0].Rows.Count; i++)
                    {
                        if (UpdataDataSet.Tables[0].Columns[i].ColumnName == "kj0064a")
                        {
                            UpdataDataSet.Tables[0].Columns[i].ColumnName = "kj0064a1";
                            break;
                        }
                    }
                    bool updata = OperaterClass.Updata(Const.CONTENTTYPE_JJCC, Const.CONTENTTYPE_JJCC, ref UpdataDataSet);
                }

 

return是用于指定函数返回的值。return语句只能出现在函数体内,出现在代码中的其他任何地方都会造成语法错误!当执行return语句时,即使函数主体中还有其他语句,函数执行也会停止!


selecte,new Row,itemarray,SreachData的使用

        public static DataSet ReCreateErJiDw(DataSet SourDS,string BmName)
        {
       //得到“单位简称”等于BmName的二级单位的所有DataRow DataSet ERJIDWS
= OperaterClass.SearchData("二级单位列表", "二级单位", "", null,string.Empty); DataRow[] drs = ERJIDWS.Tables[0].Select("kj0172a ='" + BmName + "'");//在DataTable中查出“单位简称”等于BmName的DataRow,排除Row的方法
if (drs.Length > 0)//如果有等于BmName的二级单位,这个二级单位的“单位性质”是上市,将传过来的sourDS的“项目级别”改为分公司,否则为勘探局 { foreach(DataRow dr in SourDS.Tables[0].Rows) { if (drs[0]["kj0177a"].ToString() == "上市") dr["kj0084a"] = "分公司"; else dr["kj0084a"] = "勘探局"; } } return SourDS;
          DataSet ERJIDWS = OperaterClass.SearchData("二级单位列表", "二级单位", "", null, string.Empty);
                DataRow[] drs = ERJIDWS.Tables[0].Select("kj0172a ='" + "开发部" + "'");
                DataTable tb = ERJIDWS.Tables[0];
                DataRow dr= tb.NewRow();//得到一个和ERJIDWS的DataSet的表的列,一样的DataRow,相当于复制了一行空数据行
                dr["kj0172a"] = drs[0]["kj0172a"];//给空数据行的某列赋值
          DataSet SearchXMDS = null;//20130424新增
                CamlBuilder cbl = new CamlBuilder();
                cbl.AddWhere("Neq", "kj0084a", "厂处级", "Choice");
                string query = cbl.GetCamlString();
                SearchXMDS = OperaterClass.SearchData(Const.LISTNAME_KYXM, Const.CONTENTTYPE_KYXM,
                      query,
            
new string[] { "ID","Title","kj0065a","kj0096a","kj0084a","kj0085a", "kj0090a", "kj0113a", "kj0114a", "kj8036a" });//得到指定“列”、“栏”,满足caml语句,指定“column”的DS MessageBox.Show(SearchXMDS.Tables[0].Rows.Count.ToString());
         this.Cursor = Cursors.WaitCursor;//光标
                if (!CheckIsRight()) return;//检查控件的值
                bool isTrue = false;//是否成功
                DataSet dsSave = Zeda.AssistantClass.DataSetOperator.CreateDS<DB_018车位费收费记录表>();
                drcost = dsSave.Tables[0].NewRow();
                SetSaveDSValue();//设置全局变量DataRow类型drcost的值,drcost为一个空行
                dsSave.Tables[0].Rows.Add(drcost.ItemArray);//将drcost加到dsSave中,使用drcost直接加到一张表中,就不能再加到其他表中

          //DataRow.ItemArray 属性
          //通过一个数组来获取或设置此行的所有值。
          //DataTable.NewRow 方法
          //创建与该表具有相同架构的新 DataRow。

          if (FormAssistant.IsDsNull(dsSave)) return;
                isTrue = DataService.Instance.SaveParkingFeesChargingRecordsInfo(ref dsSave);
                drcost = null;
                if (isTrue)
                {
                    this.DialogResult = DialogResult.OK;
                    this.Close();
                }
private void SetSaveDSValue()
        {
            drcost["DB0003A"] = this.txtDB0004A.Tag;//小区ID
            drcost["DB0004A"] = this.txtDB0004A.EditValue;//小区名字
            drcost["DB0119A"] = this.txtDB0049A.Tag;//车库ID
            drcost["DB0049A"] = this.txtDB0049A.EditValue;//车库
        }
         DataSet ERJIDWS = OperaterClass.SearchData("二级单位列表", "二级单位", "", null, string.Empty);
                DataRow[] drs = ERJIDWS.Tables[0].Select("kj0172a ='" + "开发部" + "'");
                DataTable tb = ERJIDWS.Tables[0];
                DataRow dr= tb.NewRow();//得到一个和ERJIDWS的DataSet的表的列,一样的DataRow,相当于复制了一行空数据行
                dr["kj0172a"] = drs[0]["kj0172a"];//给空数据行的某列赋值
                tb.Rows.Add(dr);
                DataTable tbe = ERJIDWS.Tables[0].Copy();//表的复制,包括内容
                tbe.Rows.Add(dr);//不能将dr再加到tbe表中,它已经属于tb表,DataRow是引用类型

对datagridview的单元格的操作

       foreach (DataGridViewRow dgvr in baseDgvItems.Rows)//设置Linklable的值,循环datagridview的每行
            {
                foreach (DataGridViewCell dgvc in dgvr.Cells)//循环单元格的每个单元格
                {
                    if (dgvc is DataGridViewLinkCell)
                    {
                        DataRowView drv = (DataRowView)dgvr.DataBoundItem;//不同的datagridview的行的转换
                        DataGridViewColumn dgvColumn = baseDgvItems.Columns[dgvc.ColumnIndex];//根据单元格可以得到单元格的列明
                        string currentField = dgvColumn.Name;
                        string currentText = dgvColumn.HeaderText;
                        string dataPropertyName = dgvColumn.DataPropertyName;
                        if (!string.IsNullOrEmpty(dataPropertyName))
                        {
                            continue;
                        }
                        if (!string.IsNullOrEmpty(drv[currentField].ToString()))
                            dgvc.Value = currentText;
                    }
                }
            }

    private void dgvItems_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            try
            {
                if (e.ColumnIndex == -1 || e.RowIndex == -1)
                    return;

                if (((DataGridView)sender).Columns[e.ColumnIndex] is DataGridViewLinkColumn) ;//判断单击的单元格是否为datagridviewlinkcolumn,触发事件的使用
                {
                    DataRowView drv = (DataRowView)((DataGridView)sender).Rows[e.RowIndex].DataBoundItem;//sender为dgvItem,e为cell
                    DataGridViewColumn dgvc = ((DataGridView)sender).Columns[e.ColumnIndex];
                    if (!string.IsNullOrEmpty(dgvc.DataPropertyName))
                    {
                        if (drv["kj9000a"] != null && !string.IsNullOrEmpty(drv["kj9000a"].ToString()))
                        {
                            ProgramDetail pd = new ProgramDetail();
                            pd.FormShow(drv["kj9000a"].ToString());
                        }
                    }
                    else
                    {

                        ShowPageForm Spf = new ShowPageForm();
                        string url = drv[dgvc.Name].ToString();
                        if (url == "") return;


                        url = url.Substring(0, url.IndexOf(","));
                        Spf.Formshow(url);
                    }
                }
            }

 protected bool SaveAuditResult(string[] columnName, string[] value, string message)
        {
            if (this.baseDgvItems.Rows.Count <= 0)
                return false;

            if (columnName.Length != value.Length)
            {
                ControlOpt.ShowMessage("列数和值数不匹配,请确认!");
                return false;
            }

            this.Cursor = Cursors.WaitCursor;
            try
            {
                DataSet ds = new DataSet();
                DataTable dt = new DataTable();
                dt.Columns.Add(new DataColumn("ID", typeof(string)));//在datagridview中加一列
                foreach (string cn in columnName)
                {
                    dt.Columns.Add(new DataColumn(cn, typeof(string)));
                }

                foreach (DataGridViewRow dgvr in baseDgvItems.Rows)   //更新审查的阶段状态,构建要更新的DataSet
                {
                    if (Convert.ToBoolean(dgvr.Cells["cb"].Value) == false)
                        continue;

                    DataRow dr = ((DataRowView)dgvr.DataBoundItem).Row;
                    DataRow newDR = dt.NewRow();
                    newDR["ID"] = dr["ID"].ToString();
                    for (int i = 0; i < columnName.Length; i++)
                    {
                        newDR[columnName[i]] = value[i];
                    }
                    dt.Rows.Add(newDR);
                }
                ds.Tables.Add(dt);

                if (ds == null || ds.Tables.Count == 0 || ds.Tables[0].Rows.Count == 0)
                {
                    ControlOpt.ShowMessage("请勾选列表中要操作的项!");
                    return false;
                }

                if (MessageBox.Show("确定要执行" + message + "操作吗?", "提示信息", MessageBoxButtons.YesNo, MessageBoxIcon.Question) != DialogResult.Yes)
                  return false;

                bool updata = OperaterClass.Updata(listName, contentType, ref ds);
                if (!updata)
                {
                    ControlOpt.ShowMessage(message + "保存失败!");
                    return false;
                }

                for (int i = baseDgvItems.Rows.Count - 1; i >= 0; i--)//在datagridview中删除选中行
                {
                    if (baseDgvItems.Rows[i].Cells["cb"].FormattedValue.ToString() == "True")
                    {
                        drv = (DataRowView)baseDgvItems.Rows[i].DataBoundItem;
                        SearchDataSet.Tables[0].Rows.Remove(drv.Row);
                    }
                }
                return true;
            }
            catch (Exception ex)
            {
                ControlOpt.ShowMessage(ex.Message);
                return false;
            }
            finally
            {
                this.Cursor = Cursors.Default;
            }
        }

删除datagridview的行

     public void DeleteDataGridViewItems(DataGridView dgv, string TipMessages)
        {
            Cursor.Current = Cursors.WaitCursor;
            DataTable dt = new DataTable();
            dt.Columns.Add(new DataColumn("ID", typeof(string)));

            foreach (DataGridViewRow dgvr in dgv.Rows)
            {
                if (Convert.ToBoolean(dgvr.Cells["cb"].Value) == false)
                    continue;

                DataRow dr = dt.NewRow();
                DataRowView drv = (DataRowView)dgvr.DataBoundItem;
                dr["ID"] = drv["ID"].ToString();
                dt.Rows.Add(dr);//取得所有选中的行的ID的DataTable
            }
if (dt.Rows.Count <= 0) { MessageBox.Show("请选中要删除的" + TipMessages + "", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } if (MessageBox.Show("确定要删除这些" + TipMessages + "吗?", "提示信息", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No) return; try { DataSet ds = new DataSet(); ds.Tables.Add(dt); if (OperaterClass.NewDelete(listName, contentType, ds, null))//将DataTable的加入到DataSet中,把DataSet给删除的接口,删除数据库中的数据 { for (int i = dgv.Rows.Count - 1; i >= 0; i--)//将选中的行在现在的datagridview中的数据源中删除行 { if (Convert.ToBoolean(dgv.Rows[i].Cells["cb"].Value) == false) continue; dgv.Rows.RemoveAt(i); } // MessageBox.Show("外协单位删除成功!", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information); } } catch (Exception ex) { MessageBox.Show(TipMessages + "外协单位删除失败!失败的原因如下:" + ex.Message.ToString(), "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information); } Cursor.Current = Cursors.Default; }

得到DataTable的行号,去除行号这行数据

                    List<int> drindex = new List<int>();//存放行号

                    for (int j = dt.Rows.Count - 1; j >= 0; j--)
                    {
                        DataRow dr = dt.Rows[j];

                        for (int i = 0; i < DsJJCC.Tables[0].Rows.Count; i++)
                        {

                            if (dr["Title"].ToString() == DsJJCC.Tables[0].Rows[i]["kj0083a"].ToString())//已存在
                            {
                                if (dt.Rows.Count > 0)
                                {
                                    drindex.Add(j);//将行号加到泛型数据中
                                }
                            }
                        }
                    }
                    for (int m = 0; m < drindex.Count; m++)
                    {
                        dt.Rows.RemoveAt(drindex[m]);//去除指定行
                    }

 DataTable的排序问题

在C#中要对Datatable排序,可使用DefaultView的Sort方法。先获取Datatable的DefaultView,然后设置 得到的Dataview的sort属性,最后用视图的ToTable方法将排好序的dataview导出为Datatable。

        DataTable dt = new DataTable();
            dt.Columns.Add("ID", typeof(int));
            dt.Columns.Add("Name", typeof(string));

            dt.Rows.Add(new object[] { 12, "lwolf" });
            dt.Rows.Add(new object[] { 100,"kkkkk"});
            dt.Rows.Add(new object[] { 19,"jim" });
            dt.Rows.Add(new object[] { 1,"test" });

            DataTable dtCopy = dt.Copy();

            DataView dv = dt.DefaultView;
            dv.Sort = "ID";
            dtCopy = dv.ToTable();

 给DataTable赋值,foreach和index++

           int index = 0;
                foreach (DataRow dr in SearchDataSet.Tables[0].Rows)
                {
                    if (dr["kj0084a"].ToString() == "厂处级")
                    {
                        dr["kj0068a"] = Code[index].Remove(Code[index].Length-1);
                        index++;
                    }
                }

 在datagridview中加载本地图片

      /// <summary>
        /// 设置审阅状态图片
        /// </summary>
        /// <param name="dgv"></param>
        public static void SetStatePicture(DataGridView dgv, string columnName)
        {
            foreach (DataGridViewRow dgvr in dgv.Rows)
            {
                DataRowView drv = (DataRowView)dgvr.DataBoundItem;
                //如果没有在:Datagrid练习.Properties.Resources下加载,让Resources.designer.cs生成这个图片的信息,否则是找不到的
                dgvr.Cells[columnName].Value = (Image)global::Datagrid练习.Properties.Resources.ResourceManager.GetObject("已审阅");
                    //dgvr.Cells[dgvColumnName].Value = global::Datagrid练习.Properties.Resources.ResourceManager.GetObject("查看详细"); 
            }
        }

原文地址:https://www.cnblogs.com/hongmaju/p/4059859.html