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导读为了比较两个控件的值,此时我们需要使用CompareValidator 控件。在下面的这个例子中,我们将讲解CompareValidator 控件的用法。先看文件validata4.aspx:<... 为了比较两个控件的值,此时我们需要使用CompareValidator 控件。在下面的这个例子中,我们将讲解CompareValidator 控件的用法。 先看文件validata4.aspx: <!--源文件:form\web页面简介\validate4.aspx--> <%@ Page clienttarget=downlevel %> <html> <title>CompareValidator控件示例</title> <head> <script language="VB" runat="server"> Sub Button1_OnSubmit(sender As Object, e As EventArgs) If Page.IsValid Then lblOutput.Text = "比较正确!" Else lblOutput.Text = "比较不正确!" End If End Sub Sub lstOperator_SelectedIndexChanged(sender As Object, e As EventArgs) comp1.Operator = lstOperator.SelectedIndex comp1.Validate End Sub </script> </head> <body> <center> <h3><font face="Verdana">CompareValidator控件示例</font></h3> <form runat=server> <table bgcolor="#eeeeee" cellpadding=10> <tr valign="top"> <td> <h5><font face="Verdana">字符串 1:</font></h5> <asp:TextBox Selected id="txtComp" runat="server"></asp:TextBox> </td> <td> <h5><font face="Verdana">比较运算符:</font></h5> <asp:ListBox id="lstOperator" OnSelectedIndexChanged="lstOperator_SelectedIndexChanged" runat="server"> <asp:ListItem Selected Value="Equal" >=</asp:ListItem> <asp:ListItem Value="NotEqual" ><></asp:ListItem> <asp:ListItem Value="GreaterThan" >></asp:ListItem> <asp:ListItem Value="GreaterThanEqual" >>=</asp:ListItem> <asp:ListItem Value="LessThan" ><</asp:ListItem> <asp:ListItem Value="LessThanEqual" >=<</asp:ListItem> </asp:ListBox> </td> <td> <h5><font face="Verdana">字符串 2:</font></h5> <asp:TextBox id="txtCompTo" runat="server"></asp:TextBox><p> <asp:Button runat=server Text="验证" ID="Button1" onclick="Button1_OnSubmit" /> </td> </tr> <asp:CompareValidator id="comp1" ControlToValidate="txtComp" ControlToCompare = "txtCompTo" Type="String" runat="server"/> <br> <asp:Label ID="lblOutput" Font-Name="verdana" Font-Size="10pt" runat="server"/> </form> </center> </body> </html> 在上面的代码中,我们实现了对两个控件的值 |
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