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]) + "\n" ; //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]) + "\n" ; //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]) + "\n" ; //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]) + "\n" ; //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]) + "\n" ; //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 ?
} else { mskTxtValue = ((UcMaskTextBox)(parContainer.Controls[index])).Text; controlChinaeseName = ((UcMaskTextBox)(parContainer.Controls[index])).Tag ?
} 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) var allowComments=true,cb_blogId=347936,cb_entryId=7069837,cb_blogApp=currentBlogApp,cb_blogUserGuid='46672cd6-b11e-e711-9fc1-ac853d9f53cc',cb_entryCreatedDate='2017/6/23 14:43:00';loadViewCount(cb_entryId);var cb_postType=1;var isMarkdown=false;
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