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;
}
}
}
}
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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？
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/// <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);
}
}
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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？
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/// <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;
}
}
}
}
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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？
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/// <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;
}
}
}
}
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方法“SetControlEnabled”用于设置容器控件内的指定控件的Enabled属性。
本文转自yonghu86 51CTO博客，原文链接：http://blog.51cto.com/yonghu/1683244，如需转载请自行联系原作者