ASP.NET验证控件二

<div>
<h1>RequiredFieldValidator 验证控件</h1>
用户名：
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" ControlToValidate="TextBox1" runat="server" Display="Dynamic"
ErrorMessage="用户名不能为空！"></asp:RequiredFieldValidator>
<br/>
<asp:Button ID="Button1" runat="server" Text="登录"></asp:Button>
<hr/>
<hr/>
<span style="font-size:12px;"></div></span>

<div>
<h1>CompareValidator 验证控件</h1>
价格:
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

<asp:CompareValidator ID="CompareValidator" runat="server" ControlToValidate="TextBox2"
ErrorMessage="输入大于0的数值" Operator="GreaterThan" Type="Double" ValueToCompare="0">
</asp:CompareValidator>
<asp:Button ID="Button2" runat="server" Text="提交"/>
<hr/>
<hr/>
</div>

<div>
<h1>RangeValidator 控件</h1>
价格：
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
<asp:RangeValidator ID="RangeValidator" runat="server" ControlToValidate="TextBox3"
ErrorMessage="请输入300~900之间的数" MaximumValue="900" MinimumValue="300" Type="Double" >
</asp:RangeValidator>
</div>

<div>
<h1>RegularExpressionValidator 控件</h1>
电话号码：
<asp:TextBox ID="TextBox4" runat="server"/>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="TextBox4"
Display="Dynamic" ErrorMessage="输入合格电话号码如423-875416952" ValidationExpression="(\(\d{3}\)|\d{3}-)?\d{8}"/>
<asp:Button ID="Button3" runat="server" Text="提交"/>
</div>

<div>
<h1>CustomValidator控件</h1>
<table>
<tr>
<td style="width:100px" align="right">用户名</td>
<td style="width:100px">
<asp:TextBox ID="TextBox5" runat="server"/>
</td>
</tr>
<tr>
<td style="width:100px" align="right">密码</td>
<td style="width :100px">
<asp:TextBox ID="TextBox6" runat="server"/>
</td>
</tr>
<tr>
<td style="width:100px">
</td>
<td style="width:100px">
<asp:Button ID="Button4" runat="server" Text="提交"/>
</td>
</tr>
<tr>
<td style="width:100px"/>
<td style="width:150px">
<asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="用户名或密码错误"
ValidateEmptyText="true" ControlToValidate="TextBox6" OnServerValidate="CustomValidator1_ServerValidate"
DisPlay="Dynamic">
</asp:CustomValidator>
</td>
</tr>
</table>
</div>

//自定义验证函数
private bool IsPassed(string userName, string password)
{
if (userName == "zhouzhou" && password == "123456")
return true;
else
return false;
}

protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
{
if (IsPassed(this.TextBox5.Text.ToString(), this.TextBox6.Text.ToString()))//调用自定义函数
args.IsValid = true;//通过验证
else
args.IsValid = false;//未通过验证
}