c# - Execute ClientSide before ServerSide in ASP.NET

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c# - Execute ClientSide before ServerSide in ASP.NET

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

I am using ASP.NET 3.5.

When the user click on say btnSubmit I want to first execute some JavaScript code and then execute some C#/VB.NET code.

Is this possible? If so how would one do it?

Thanks in advance!

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1 Answer

深蓝 · Answer 1 · 2022-01-31T07:05:45+0000

This is very simple:

http://msdn.microsoft.com/en-us/library/7ytf5t7k.aspx

<%@ Page Language="C#" %>
<script runat="server">
    protected void Button1_Click(Object sender, EventArgs e)
    {
        Label1.Text = "Server click handler called.";
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<body>
  <form id="form1" runat="server">
    <asp:Button ID="Button1" Runat="server" 
      OnClick="Button1_Click" 
        OnClientClick="return confirm('Ready to submit.');" 
        Text="Test Client Click" />
    <br />
    <asp:Label ID="Label1" Runat="server" text="" />
  </form>
</body>
</html>

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