CustomValidator

来源：互联网发布：王俊凯人品知乎编辑：程序博客网时间：2024/05/16 11:39

CustomValidator控件具体实现客户端验证，服务器验证和混合式验证三种模式

1. 客户端验证

aspx

<head runat="server"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>   <title></title>   <script>       function clientValidate(source, args)       {           if ((args.Value % 2) == 0)               args.IsValid = true;           else               args.IsValid = false;       }   </script></head><body>    <form id="form1" runat="server">      <div>        数值: <asp:TextBox ID="txtInput" runat="server"></asp:TextBox>         <asp:CustomValidator ID="cvInput" runat="server" ErrorMessage="CustomValidator" ControlToValidate="txtInput" ClientValidationFunction="clientValidate">不是一个偶数!</asp:CustomValidator>         <br />         <asp:Button ID="btnSubmit" runat="server" Text="确定" OnClick="btnSubmit_Click" OnClientClick="btnSubmit_Click" />         <asp:Label ID="lblMsg" runat="server" ></asp:Label>     </div>       </form></body>

.cs

  protected void btnSubmit_Click(object sender, EventArgs e)        {            if(Page.IsValid)            {                lblMsg.Text = "验证通过";            }        }

服务器验证

aspx

<div>        数值: <asp:TextBox ID="txtInput" runat="server" OnTextChanged="txtInput_TextChanged"></asp:TextBox>         <asp:CustomValidator ID="cvInput" runat="server" ErrorMessage="CustomValidator" ControlToValidate="txtInput" OnServerValidate="cvInput_ServerValidate">不是一个偶数!</asp:CustomValidator>         <br />         <asp:Button ID="btnSubmit" runat="server" Text="确定" OnClick="btnSubmit_Click" OnClientClick="btnSubmit_Click" />         <asp:Label ID="lblMsg" runat="server" ></asp:Label>     </div>

.cs

protected void btnSubmit_Click(object sender, EventArgs e)        {            if(Page.IsValid)            {                lblMsg.Text = "验证通过";            }        }              protected void cvInput_ServerValidate(object source, ServerValidateEventArgs args)        {            int value = int.Parse(args.Value);            if((value%2)==0)            {                args.IsValid = true;            }            else            {                args.IsValid = false;            }                    }

阅读全文

0 0