WinForm容器内控件批量效验是否允许为空?设置是否只读?设置是否可用等方法分享
在WinForm程序中,我们有时需要对某容器内的所有控件做批量操作、如批量判断是否允许为空?批量设置为只读、批量设置为可用或不可用等常用操作,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++) { //如果是容器类控件,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、只需调用:
EmptyControlValue(容器控件名称);
2、断一容器控件内某控件的值是否可以为空?
/// <summary> /// 判断一容器控件内某控件的值是否可以为空(通过控件的AccessibleName属性设置为"NotNull") /// <remarks> /// 说明: /// 此方法显示提示信息,对于相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++) { //如果是容器类控件,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 ?? ((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) //如果有有值,则要对输入的日期进行格式判断 { 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 + "] 日期范围不正确! /n正确日期范围为:1754-01-01 至 9999-12-31"); returnValue = false; } } else { MessageBoxHelper.ShowErrorMsg("[" + controlChinaeseName + "] 日期格式不正确! 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”可以用于批量判断指定容器内的所有控件是否可以为空,对于不为空的可以做批量提示显示,设置如下图所示:
3、设置容器控件中包含的控件为只读?
/// <summary> /// 设置容器控件中包含的控件为只读(通过控件的AccessibleName属性设置为"CanReadOnly") /// </summary> /// <param name="parContainer">容器控件</param> /// <param name="isReadOnly">是否为只读,true是只读,false则相反</param>> public static void SetControlReadOnly(Control parContainer, bool isReadOnly) { for (int index = 0; index < parContainer.Controls.Count; index++) { //如果是容器类控件,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相同,只要设置控件的“AccessibleName”属性为“CanReadOnly”即可。
4、设置容器控件中包含的控件是否可用?
/// <summary> /// 设置容器控件中包含的控件是否可用(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++) { //如果是容器类控件,递归调用自己 if (parContainer.Controls[index].HasChildren) { SetControlEnabled(parContainer.Controls[index], isEnabled); } else { if (parContainer.Controls[index].AccessibleName == null && !parContainer.Controls[index].AccessibleName.ToLower().Contains("Enabled")) { continue; } //(parContainer.Controls[index]).BackColor = System.Drawing.Color.White;//设置当前控件的背景色为白色 switch (parContainer.Controls[index].GetType().Name) { case "Label": break; default: parContainer.Controls[index].Enabled = isEnabled; break; } } } }
方法“SetControlEnabled”用于设置容器控件内的指定控件的Enabled属性。
同时需要说明的时,这些方法可以同时设置,只需要设置控件的“AccessibleName”为这种类型即可:EmptyValue| NotNull |Enabled|CanReadOnly,这样设置即可,对于提示信息的显示,我们可以设置控件的Tag属性。
本文转自yonghu86博客园博客,原文链接:http://www.cnblogs.com/huyong/p/4717301.html,如需转载请自行联系原作者