WinForm容器内控件批量效验是否同意为空？设置是否仅仅读？设置是否可用等方法分享

WinForm容器内控件批量效验是否同意为空？设置是否仅仅读？设置是否可用等方法分享

 

　　在WinForm程序中，我们有时须要对某容器内的全部控件做批量操作、如批量推断是否同意为空？批量设置为仅仅读、批量设置为可用或不可用等经常使用操作。本文分享这几种方法，起抛砖引玉的作用。欢迎讨论。

　1、  清除容器控件内里面指定控件的值的方法

/// <summary>
/// 清除容器里面指定控件的值(通过控件的AccessibleName属性设置为"EmptyValue")
/// </summary>
/// <param name="parContainer">容器控件</param>
public static void EmptyControlValue(Control parContainer)
{
    for (int index = 0; index < parContainer.Controls.Count; index++)
    {
        //假设是容器类控件，递归调用自己
        if (parContainer.Controls[index].HasChildren && !parContainer.Controls[index].GetType().Name.ToLower().StartsWith("uc"))
        {
            EmptyControlValue(parContainer.Controls[index]);
        }
        else
        {
            if (parContainer.Controls[index].AccessibleName == null ||
                !parContainer.Controls[index].AccessibleName.ToLower().Contains("emptyvalue"))
            {
                continue;
            }
 
            switch (parContainer.Controls[index].GetType().Name)
            {
                case "Label":
                    break;
                //case "ComboBox":
                //    ((ComboBox)(parContainer.Controls[index])).Text = "";                          
                //    break;
                case "TextBox":
                    ((TextBox)(parContainer.Controls[index])).Text = "";
                    break;
                case "UcTextBox":
                    ((UcTextBox)(parContainer.Controls[index])).Text = "";
                    break;
                case "RichTextBox":
                    ((RichTextBox)(parContainer.Controls[index])).Text = "";
                    break;
                case "MaskedTextBox":
                    ((MaskedTextBox)(parContainer.Controls[index])).Text = "";
                    break;
                case "UcMaskTextBox":
                    ((UcMaskTextBox)(parContainer.Controls[index])).Text = "";
                    break;
                case "RadioButton":
                    ((RadioButton)(parContainer.Controls[index])).Checked = false;
                    break;
                case "CheckBox":
                    ((CheckBox)(parContainer.Controls[index])).Checked = false;
                    break;
            }
        }
    }
}

　　

　　要清空控件的值、仅仅需调用：　　

EmptyControlValue(容器控件名称);

　2、断一容器控件内某控件的值能否够为空？

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/// <summary>
/// 推断一容器控件内某控件的值能否够为空(通过控件的AccessibleName属性设置为"NotNull")
/// <remarks>
///     说明：
///         此方法显示提示信息，对于对应取值不能为空的控件。应设置其“Tag”属性。以友好提示信息。
/// </remarks>
/// </summary>
/// <param name="parContainer">容器控件</param>
public static bool ControlValueIsEmpty(Control parContainer)
{
    bool returnValue = true;
    string hintInfo = string.Empty;
    for (int index = 0; index < parContainer.Controls.Count; index++)
    {
        //假设是容器类控件。递归调用自己
 
        if (parContainer.Controls[index].HasChildren && !parContainer.Controls[index].GetType().Name.ToLower().StartsWith("uc"))
        {
            ControlValueIsEmpty(parContainer.Controls[index]);
        }
        else
        {
            if (string.IsNullOrEmpty(parContainer.Controls[index].AccessibleName))
            {
                continue;
            }
 
            if (!parContainer.Controls[index].AccessibleName.ToLower().Contains("notnull")
                && !parContainer.Controls[index].GetType().Name.ToLower().Contains("mask"))
            {
                continue;
            }
 
            switch (parContainer.Controls[index].GetType().Name)
            {
                case "Label"://排除Label
                    break;
                case "ComboBox":
                case "ComboBoxEx":
                case "UcComboBoxEx":
                    if (parContainer.Controls[index] is ComboBox)
                    {
                        if (((ComboBox)(parContainer.Controls[index])).Text.Trim() == string.Empty)
                        {
                            hintInfo += GetControlName((ComboBox)parContainer.Controls[index]) + " ";
                            //ShowInfo((ComboBox)parContainer.Controls[index], " 不能为空!");
                            //((ComboBox)(parContainer.Controls[index])).Focus();
                            returnValue = false;
                        }
                    }
                    else
                    {
                        if (((UcComboBoxEx)(parContainer.Controls[index])).Text.Trim() == string.Empty)
                        {
                            hintInfo += GetControlName((UcComboBoxEx)parContainer.Controls[index]) + " ";
                            //ShowInfo((UcComboBoxEx)parContainer.Controls[index], " 不能为空!");
                            //((UcComboBoxEx)(parContainer.Controls[index])).Focus();
                            returnValue = false;
                        }
                    }
                    break;
                case "TextBox":
                case "UcTextBox":
                    if (parContainer.Controls[index] is TextBox)
                    {
                        if (((TextBox)(parContainer.Controls[index])).Text.Trim() == string.Empty)
                        {
                            hintInfo += GetControlName((TextBox)parContainer.Controls[index]) + " ";
                            //ShowInfo((TextBox)parContainer.Controls[index], " 不能为空!");
                            //((TextBox)(parContainer.Controls[index])).Focus();
                            returnValue = false;
                        }
                    }
                    else
                    {
                        if (((UcTextBox)(parContainer.Controls[index])).Text.Trim() == string.Empty)
                        {
                            hintInfo += GetControlName((UcTextBox)parContainer.Controls[index]) + " ";
                            //ShowInfo((UcTextBox)parContainer.Controls[index], " 不能为空!");
                            //((UcTextBox)(parContainer.Controls[index])).Focus();
                            returnValue = false;
                        }
                    }
                    break;
                case "RichTextBox":
                    if (((RichTextBox)(parContainer.Controls[index])).Text.Trim() == string.Empty)
                    {
                        hintInfo += GetControlName((RichTextBox)parContainer.Controls[index]) + " ";
                        //ShowInfo((RichTextBox)parContainer.Controls[index], " 不能为空!");
                        //((RichTextBox)(parContainer.Controls[index])).Focus();
                        returnValue = false;
                    }
                    break;
                case "MaskedTextBox":
                case "UcMaskTextBox":
                    string mskTxtValue = string.Empty;
                    object controlChinaeseName = null;
                    if (parContainer.Controls[index] is MaskedTextBox)
                    {
                        mskTxtValue = ((MaskedTextBox)(parContainer.Controls[index])).Text;
                        controlChinaeseName = ((MaskedTextBox)(parContainer.Controls[index])).Tag ?

? ((MaskedTextBox)(parContainer.Controls[index])).Name;

                    }
                    else
                    {
                        mskTxtValue = ((UcMaskTextBox)(parContainer.Controls[index])).Text;
                        controlChinaeseName = ((UcMaskTextBox)(parContainer.Controls[index])).Tag ?

? ((UcMaskTextBox)(parContainer.Controls[index])).Name;

                    }
 
                    if (mskTxtValue.Substring(0, 4).Trim().Length > 0) //假设有有值。则要对输入的日期进行格式推断
                    {
                        if (DateTimeHelper.IsDate(mskTxtValue))
                        {
                            //把用户输入的日期数据控制在(1754-01-01 至 9999-12-31这间)，这主要解决SqlServer与C#日期范围的冲突
                            if (DateTimeHelper.ToDate(mskTxtValue) < DateTimeHelper.ToDate("1754-01-01") ||
                                DateTimeHelper.ToDate(mskTxtValue) >= DateTimeHelper.ToDate("9999-12-31"))
                            {
                                MessageBoxHelper.ShowErrorMsg("[" + controlChinaeseName + "] 日期范围不对! /n正确日期范围为:1754-01-01 至 9999-12-31");
                                returnValue = false;
                            }
                        }
                        else
                        {
                            MessageBoxHelper.ShowErrorMsg("[" + controlChinaeseName + "] 日期格式不对! 正确格式如:2012-01-01");
                            returnValue = false;
                        }
                    }
                    else
                    {
                        if (mskTxtValue.Substring(0, 5).Equals("    -") && parContainer.Controls[index].AccessibleName.ToLower() == "notnull")
                        {
                            MessageBoxHelper.ShowErrorMsg("[" + controlChinaeseName + "]不能为空!");
                            returnValue = false;
                        }
                    }
                    break;
                default:
                    break;
            }
        }
    }
    if (!string.IsNullOrEmpty(hintInfo.Trim()))
    {
        MessageBoxHelper.ShowWarningMsg(hintInfo + "不能为空！

");

    }
    return returnValue;
}
 
private static string GetControlName(Control ctr)
{
    if (ctr.Tag == null)
    {
        return ctr.Name;
    }
    else
    {
        return ctr.Tag.ToString();
    }
}
 
private static void ShowInfo(Control ctr, string info)
{
    if (ctr.Tag == null)
    {
        MessageBoxHelper.ShowWarningMsg(ctr.Name + info);
    }
    else
    {
        MessageBoxHelper.ShowWarningMsg(ctr.Tag + info);
    }
}

　　方法“ControlValueIsEmpty”能够用于批量推断指定容器内的全部控件能否够为空，对于不为空的能够做批量提示显示，设置例如以下图所看到的：

　3、设置容器控件中包括的控件为仅仅读？

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/// <summary>
/// 设置容器控件中包括的控件为仅仅读(通过控件的AccessibleName属性设置为"CanReadOnly")
/// </summary>
/// <param name="parContainer">容器控件</param>
/// <param name="isReadOnly">是否为仅仅读，true是仅仅读,false则相反</param>>
public static void SetControlReadOnly(Control parContainer, bool isReadOnly)
{
    for (int index = 0; index < parContainer.Controls.Count; index++)
    {
        //假设是容器类控件，递归调用自己
        if (parContainer.Controls[index].HasChildren)
        {
            SetControlReadOnly(parContainer.Controls[index], isReadOnly);
        }
        else
        {
            if (parContainer.Controls[index].AccessibleName == null &&
              !parContainer.Controls[index].AccessibleName.ToLower().Contains("canreadonly"))
            {
                continue;
            }
 
            switch (parContainer.Controls[index].GetType().Name)
            {
                case "TextBox":
                case "UcTextBox":
                    if (parContainer.Controls[index] is TextBox)
                    {
                        ((TextBox)(parContainer.Controls[index])).ReadOnly = isReadOnly;
                    }
                    else
                    {
                        ((UcTextBox)(parContainer.Controls[index])).ReadOnly = isReadOnly;
                    }
 
                    break;
                case "RichTextBox":
                    ((RichTextBox)(parContainer.Controls[index])).ReadOnly = isReadOnly;
                    break;
                case "MaskedTextBox":
                case "UcMaskTextBox":
                    if (parContainer.Controls[index] is MaskedTextBox)
                    {
                        ((MaskedTextBox)(parContainer.Controls[index])).ReadOnly = isReadOnly;
                    }
                    else
                    {
                        ((UcMaskTextBox)(parContainer.Controls[index])).ReadOnly = isReadOnly;
                    }
                    break;
                case "ComboBox":
                    ((ComboBox)(parContainer.Controls[index])).Enabled = !isReadOnly;
                    break;
                case "Button":
                case "UcButton":
                    if (parContainer.Controls[index] is Button)
                    {
                        ((Button)(parContainer.Controls[index])).Enabled = !isReadOnly;
                    }
                    else
                    {
                        ((UcButton)(parContainer.Controls[index])).Enabled = !isReadOnly;
                    }
                    break;
                default:
                    break;
            }
        }
    }
}

　　方法“SetControlReadOnly”的使用方式与上面的方法同样，仅仅要设置控件的“AccessibleName”属性为“CanReadOnly”就可以。

　4、设置容器控件中包括的控件是否可用？

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/// <summary>
/// 设置容器控件中包括的控件是否可用(通过控件的AccessibleName属性设置为"Enabled")
/// </summary>
/// <param name="parContainer">容器控件</param>
/// <param name="isEnabled">是否为用可。true:可用,false:不可用</param>>
public static void SetControlEnabled(Control parContainer, bool isEnabled)
{
    for (int index = 0; index < parContainer.Controls.Count; index++)
    {
        //假设是容器类控件。递归调用自己
        if (parContainer.Controls[index].HasChildren)
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原文地址：https://www.cnblogs.com/yangykaifa/p/7069837.html