winform —— 对话框和流及打印

对话框：注意引用using System.IO;
showdialog();显示对话框，返回一个dialogresult的枚举类型

colorDialog：color属性，用来获取颜色
folderBrowserDialog:SelectedPath选中路径
fontDialog:font属性，返回一个font类型的值，里面存储了关于字体的设置
openFileDialog:
filename获取或设置文件路径包含文件名
filenames 是文件路径字符串数组
filter:文件筛选器格式为提示文本一|*.后缀|提示文本二|*.后缀|提示文本三|*.后缀
saveFileDialog1:
filename获取或设置文件路径包含文件名
filenames 是文件路径字符串数组
filter:文件筛选器格式为提示文本一|*.后缀|提示文本二|*.后缀|提示文本三|*.后缀

  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Windows.Forms;
  9 using System.IO;
 10 
 11 namespace WindowsFormsApplication6
 12 {
 13     public partial class Form1 : Form
 14     {
 15         public Form1()
 16         {
 17             InitializeComponent();
 18         }
 19         //颜色
 20         private void button1_Click(object sender, EventArgs e)
 21         {
 22             DialogResult dr = colorDialog1.ShowDialog();
 23             if (dr == DialogResult.OK)
 24             {
 25                 this.BackColor = colorDialog1.Color;
 26             }
 27         }
 28         //文件夹浏览器
 29         private void button2_Click(object sender, EventArgs e)
 30         {
 31            DialogResult dr = folderBrowserDialog1.ShowDialog();
 32            if (dr == DialogResult.OK)
 33            {
 34                MessageBox.Show(folderBrowserDialog1.SelectedPath);
 35            }
 36            else
 37            {
 38                MessageBox.Show(folderBrowserDialog1.SelectedPath);
 39            }
 40         }
 41         //字体
 42         private void button3_Click(object sender, EventArgs e)
 43         {
 44             fontDialog1.ShowDialog();
 45             MessageBox.Show(fontDialog1.Font.Size.ToString());
 46         }
 47         //打开
 48         private string Files;
 49         private void button4_Click(object sender, EventArgs e)
 50         {
 51             DialogResult dr = openFileDialog1.ShowDialog();
 52             if (DialogResult.OK == dr)
 53             {
 54                 string filename = openFileDialog1.FileName;
 55                 StreamReader sr = new StreamReader(filename);
 56                 textBox1.Text = sr.ReadToEnd();
 57                 sr.Close();
 58 
 59                 Files = filename;
 60             }
 61         }
 62         //保存
 63         private void button5_Click(object sender, EventArgs e)
 64         {
 65             if (Files == null)
 66             {
 67                 saveFileDialog1.Filter = "文本 |*.txt|word|*.doc|excel|*.xls";
 68                 DialogResult dr = saveFileDialog1.ShowDialog();
 69                 if (dr == DialogResult.OK)
 70                 {
 71                     string filename = saveFileDialog1.FileName;
 72 
 73                     StreamWriter sw = new StreamWriter(filename);
 74                     sw.Write(textBox1.Text);
 75                     sw.Close();
 76                 }
 77             }
 78             else
 79             {
 80                 StreamWriter sw = new StreamWriter(Files);
 81                 sw.Write(textBox1.Text);
 82                 sw.Close();
 83             }
 84         }
 85 
 86         private void Form1_Load(object sender, EventArgs e)
 87         {
 88 
 89         }
 90         //关闭窗体
 91         private void button6_Click(object sender, EventArgs e)
 92         {
 93             this.Close();
 94         }
 95         //页面设置
 96         private void button7_Click(object sender, EventArgs e)
 97         {
 98             pageSetupDialog1.Document = printDocument1;
 99             pageSetupDialog1.ShowDialog();
100         }
101         //打印
102         private void button8_Click(object sender, EventArgs e)
103         {
104             printDialog1.Document = printDocument1;
105             DialogResult dr = printDialog1.ShowDialog();
106             if (dr == DialogResult.OK)
107             {
108                 printDocument1.Print();
109             }
110         }
111 
112         private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
113         {
114             System.Drawing.Font f = new System.Drawing.Font("宋体",12);
115             e.Graphics.DrawString(textBox1.Text,f,System.Drawing.Brushes.Aqua,5,5);
116         }
117     }
118 }

View Code

流：
输入流：

string filename = openFileDialog1.FileName;
//通过读入流进行文件读取
StreamReader sr = new StreamReader(filename);
textBox1.Text = sr.ReadToEnd();
sr.Close();

输出流：

string filename = saveFileDialog1.FileName;
//写入流，可以在硬盘上创建文件，并为文件写入信息
StreamWriter sw = new StreamWriter(filename);
sw.Write(this.textBox1.Text);
sw.Close();
this:代表的它所在的那个类当前对象

  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Linq;
  7 using System.Text;
  8 using System.Windows.Forms;
  9 using System.IO;
 10 
 11 namespace FirstForm
 12 {
 13     public partial class JiShiben : Form
 14     {
 15         public JiShiben()
 16         {
 17             InitializeComponent();
 18         }
 19 
 20         private void textBox1_TextChanged(object sender, EventArgs e)
 21         {
 22             //MessageBox.Show("你好");
 23             if (this.textBox1.Text.Length > 0)
 24             { 
 25                 撤销ToolStripMenuItem.Enabled = true;
 26             }
 27         }
 28 
 29         private void 复制ToolStripMenuItem_Click(object sender, EventArgs e)
 30         {
 31             textBox1.Copy();
 32         }
 33 
 34         private void 粘贴ToolStripMenuItem_Click(object sender, EventArgs e)
 35         {
 36             textBox1.Paste();
 37         }
 38 
 39         private void 剪切ToolStripMenuItem_Click(object sender, EventArgs e)
 40         {
 41             textBox1.Cut();
 42         }
 43 
 44         private void 撤销ToolStripMenuItem_Click(object sender, EventArgs e)
 45         {
 46             if (textBox1.CanUndo == true)
 47             {
 48                 // Undo the last operation.
 49                 textBox1.Undo();
 50                 // Clear the undo buffer to prevent last action from being redone.
 51                 textBox1.ClearUndo();
 52             }
 53         }
 54 
 55         private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)
 56         {
 57             textBox1.SelectedText = "";
 58         }
 59 
 60         private void 全选ToolStripMenuItem_Click(object sender, EventArgs e)
 61         {
 62             textBox1.SelectAll();
 63         }
 64 
 65         private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
 66         {
 67            DialogResult dr =  openFileDialog1.ShowDialog();
 68            if (dr == DialogResult.OK)
 69            {
 70                string filename = openFileDialog1.FileName;
 71                //通过读入流进行文件读取
 72                StreamReader sr = new StreamReader(filename);
 73                textBox1.Text = sr.ReadToEnd();
 74                sr.Close();
 75            }
 76         }
 77 
 78         private void 新建ToolStripMenuItem_Click(object sender, EventArgs e)
 79         {
 80             if (this.textBox1.Text.Length > 0)
 81             {
 82                DialogResult drg= MessageBox.Show("是否进行保存?","保存对话框",MessageBoxButtons.YesNo);
 83                if (DialogResult.Yes == drg)
 84                {
 85                    if (FileName == null)
 86                    {
 87                        DialogResult dr = saveFileDialog1.ShowDialog();
 88                        if (dr == DialogResult.OK)
 89                        {
 90                            string filename = saveFileDialog1.FileName;
 91                            //写入流，可以在硬盘上创建文件，并为文件写入信息
 92                            StreamWriter sw = new StreamWriter(filename);
 93                            sw.Write(this.textBox1.Text);
 94                            sw.Close();
 95                        }
 96                    }
 97                    else
 98                    {
 99                        //写入流，可以在硬盘上创建文件，并为文件写入信息
100                        StreamWriter sw = new StreamWriter(FileName);
101                        sw.Write(this.textBox1.Text);
102                        sw.Close();
103                    }
104                }
105             }
106 
107             FileName = null;
108             this.textBox1.Text = "";
109         }
110         private string FileName;
111         private void 保存ToolStripMenuItem_Click(object sender, EventArgs e)
112         {
113             if (FileName == null)
114             {
115                 DialogResult dr = saveFileDialog1.ShowDialog();
116                 if (dr == DialogResult.OK)
117                 {
118                     string filename = saveFileDialog1.FileName;
119                     //写入流，可以在硬盘上创建文件，并为文件写入信息
120                     StreamWriter sw = new StreamWriter(filename);
121                     sw.Write(this.textBox1.Text);
122                     sw.Close();
123                 }
124             }
125             else
126             {
127                 //写入流，可以在硬盘上创建文件，并为文件写入信息
128                 StreamWriter sw = new StreamWriter(FileName);
129                 sw.Write(this.textBox1.Text);
130                 sw.Close();
131             }
132         }
133 
134         private void 另存为ToolStripMenuItem_Click(object sender, EventArgs e)
135         {
136             saveFileDialog1.Filter = "文本文件(*.txt)|*.txt|word文件(*.doc)|*.doc";
137             DialogResult dr = saveFileDialog1.ShowDialog();
138             if (dr == DialogResult.OK)
139             {
140                 string filename = saveFileDialog1.FileName;
141                 //写入流，可以在硬盘上创建文件，并为文件写入信息
142                 StreamWriter sw = new StreamWriter(filename);
143                 sw.Write(this.textBox1.Text);
144                 sw.Close();
145             }
146         }
147 
148         private void 页面设置ToolStripMenuItem_Click(object sender, EventArgs e)
149         {
150             pageSetupDialog1.Document = printDocument1;//为页面设置对话框指定打印对象
151             pageSetupDialog1.ShowDialog();//打开页面对话框
152         }
153 
154         private void 打印ToolStripMenuItem_Click(object sender, EventArgs e)
155         {
156            DialogResult dr =  printDialog1.ShowDialog();
157            if (dr == DialogResult.OK)
158            {
159                printDocument1.Print();
160            }
161         }
162 
163         private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
164         {
165             //设置打印的画板内容
166             System.Drawing.Font f = new System.Drawing.Font("宋体", 12);
167             e.Graphics.DrawString(this.textBox1.Text, f, SystemBrushes.ActiveBorder, 10.0f, 0f);
168         }
169 
170         private void 查找ToolStripMenuItem_Click(object sender, EventArgs e)
171         {
172             //Find ff = new Find(this.textBox1.SelectedText,this);
173             //ff.Owner = this;
174             //ff.Show();
175         }
176 
177         private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
178         {
179             this.Close();
180         }
181 
182         private void JiShiben_Load(object sender, EventArgs e)
183         {
184 
185         }
186     }
187 }

View Code

打印：
打印对话框：printdialog
页面设置：pagesetupdialog
这两个对话框都需要通过设置printdocument来指定打印对象
printdocument：打印对象，必须要有，一块画板，用于打印机与打印内容之间中转，打印机打印的是printdoment
printDocument1_PrintPage:事件，每打印一页之前触发，用于给printdocument指定打印内容
通过画板把内容画到打印对象的页上：
System.Drawing.Font f = new System.Drawing.Font("宋体",12);
e.Graphics.DrawString(textBox1.Text,f,System.Drawing.Brushes.Aqua,5,5);
最后打印：打印对话框那，如果打印对话框返回确定打印，就执行printdocument.print();