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Editorial Team
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Asked: 2026-06-05T23:33:04+00:00

this is a post back problem (I don’t want to use the client side

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this is a post back problem (I don’t want to use the client side to solve this issue , there must be a way to prevent the postBack then using the client side ) , i have a button when clicked it calls a javascript function from the code behind , but before it does this it post back the page , Question is : how can i skip the post back step and jump to the javascript part ??

<script type="text/javascript">
    function hello(name) {
        alert("hello world from javascript " + name)
        return false;
    }
</script>
 </head>
 <body>
<form id="form1" runat="server">
<div>
    <asp:Button ID="Button1" runat="server" Text="Button" />
</div>
</form>

code Behind : 

    Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
    Dim Myname As String = "myName"
    Dim cstype As Type = Me.GetType()
    Page.ClientScript.RegisterStartupScript(cstype, "MyKey", "hello('" & Myname & "');", True)

End Sub
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1 Answer

  1. Editorial Team

    Use a client side handler instead of a server side handler. Remove Button1_Click and add your js call as an OnClientClick attribute value.

    <asp:Button ID="Button1" runat="server" Text="Button" 
            OnClientClick="return hello('myName');" />

    Or, don’t use a server control at all:

    <button id="button1" onclick="return hello('myName');">Button</button>
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