//导入程序使用的.net类库
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Text.RegularExpressions;
//命名空间RegexEditor，以后将继续扩充....
namespace RegexEditor
{
/** RegexTextBox继承自TextBox控件
* 能够通过正则表达式对数据进行有效性校验
*/
public class RegexTextBox : System.Windows.Forms.TextBox
{
private string strRegex;//用于校验的正则表达式
private string strVerifyError;//校验错误的提示
private bool bIsVerifySuccess;//是否检验成功
private bool bIsDisplayError;//是否显示错误
private bool bToVerify;//是否进行校验
//属性：用于校验的正则表达式
public string RegexString
{
get
{
return strRegex;
}
set
{
strRegex = value;
}
}
//属性：检验错误的提示
public string VerifyErrorString
{
get
{
return strVerifyError;
}
set
{
strVerifyError = value;
}
}
//属性：是否检验成功
public bool IsVerifySuccess
{
get
{
return bIsVerifySuccess;
}
set
{
bIsVerifySuccess = value;
}
}
//属性：是否显示校验错误
public bool IsDisplayError
{
get
{
return bIsDisplayError;
}
set
{
bIsDisplayError = value;
}
}
public bool ToVerify
{
get
{
return bToVerify;
}
set
{
bToVerify = value;
}
}
//构造函数
public RegexTextBox()
{
InitializeComponent();
}
//初始化变量以及控件属性
void InitializeComponent()
{
RegexString = "";
VerifyErrorString = "";
IsVerifySuccess = true;
IsDisplayError = false;
ToVerify = false;
this.Name = "RegexTextBox";
this.Validating += new System.ComponentModel.CancelEventHandler(this.OnValidatingData);
}
//私有过程：校验数据
private bool VerifyData()
{
IsVerifySuccess = Regex.IsMatch(this.Text,RegexString);
return IsVerifySuccess;
}
//事件处理函数：校验数据
private void OnValidatingData(object sender, System.ComponentModel.CancelEventArgs e)
{
if(!ToVerify)//不需要校验直接退出
{
e.Cancel = false;
return;
}
if(!VerifyData())//校验不正确..
{
if(this.IsDisplayError)//要求显示校验错误提示..
{
MessageBox.Show(VerifyErrorString,"警告：");
}
else//要求不显示校验错误提示..
{
this.SelectAll();
}//end if
e.Cancel = true;
}
else//校验正确..
{
e.Cancel = false;
}//end if
}
}//End Class
}//End NameSpace
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