how can i get the return value from the Page.ClientScript.RegisterStartupScript()

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Dear All,

I am using the Page.ClientScript inside the button click event. So, how can i get the any value from below funvtion.

Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "validate();", true);

the pop up is display of confirm button but i want to know that user click the "Ok" or "Cancel" button, so i can do based on that particular code.

<script type="text/javascript">

function validate()
{
       if(!confirm('Are you Sure to submit your File or Data?'))
       {              
             return false;
       }
       $.showprogress();

}

</script>

So, please help me for this.

Posted 24-Feb-13 20:18pm

Mittu Machhi

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Pallavi Waikar · Answer 1 · 2013-02-24T20:46:00

use hidden field on page set it's value in validation function and after calling Page.ClientScript.RegisterStartupScript() retrive it from hidenfield
exa.

<asp:HiddenField id="HiddenField1" runat="server" />

XML

<script type="text/javascript">

//in javascript fist check for postback becose it is registered on page load
function validate()
{
var chkPostBack = '<%= Page.IsPostBack ? "true" : "false" %>';
if (chkPostBack == 'true')
 {

       if(!confirm('Are you Sure to submit your File or Data?'))
       {
document.getElementById('<%= HiddenField1.ClientID %>').value=0;
            
       }
       $.showprogress();
}
        else
       document.getElementById('<%= HiddenField1.ClientID %>').value=1;

}

</script>

on code behind retrive it from hiddenfield.But first register fuction using RegisterStartupScript on page

C#

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
             ScriptManager.RegisterStartupScript(this, typeof(string), "alert", "validate();", true);
        }
      
    }
protected void Button1_Click(object sender, EventArgs e)
    {
Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "validate();", true);
int result1=Convert.ToInt32(HiddenField1.Value);
}