need to use confirm boxes in a C# web page
Hi,
I am trying to use a confirm box using Javascript in a web page for C#.
What I need to do is to set a value of flag to 1(in the c# code) based on the result of the confirm box.
This is my code
int flag=0;
string script2="<SCRIPT language='javascript'>"+
"var ans =confirm('Press ok or cancel');" + "</SCRIPT>";
Page.RegisterStartupScript("confirm",script2);
If the confirm box evaluates to true I want to set flag =1.
How do I do it?
Thanks
satish
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-1 |
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Satishr23
4/19/2006 12:06:50 AM
asp.net.getting-started
91979 articles. 
4 followers.
3 Replies
1514 Views
your mixing client side javascript with server code, and this might take a little bit more work.
If you just want to hold the answer until your next postback, you can use a hidden field to hold the answer. Add this to your page:
<input type="hidden" id="myFlag" runat="server">
and modify your code as follows:
string script2="<SCRIPT language='javascript'>"+
"var ans =confirm('Press ok or cancel');" +
"document.getElementById('" + myFlag.ID + "').value = ans" +
+ "</SCRIPT>";
Page.RegisterStartupScript("confirm",script2);
then the next time your page posts, you will have the value:
string result = myFlag.Value;
If you want the page to postback immediately depending on the answer, that will take a bit more code.
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1 |
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sjmueller
4/19/2006 1:07:11 AM
Hi,
Thanks .
Is there a way to do the coding in a C# page rather then the asp page.
thnks
satish
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1 |
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Satishr23
4/19/2006 1:51:15 AM
In the aspx file:
<input type="hidden" id="Hidden1" name="Hidden1" runat="server">That adds this to the CodeBehind:
protected System.Web.UI.HtmlControls.HtmlInputHidden Hidden1;Then add to the Page_Load event handler:
string scriptString = "<script language=JavaScript>\n";
// Store the confirm's return in the hidden control...
scriptString += "document.getElementById('" + Hidden1.ClientID + "').value = confirm('Overwrite?');\n";// Do a new PostBack...
scriptString += GetPostBackEventReference(Hidden1, String.Empty) + ";\n";scriptString += "</script>\n";
RegisterStartupScript("ConfirmScript", scriptString);
if ( IsPostBack && Request["__EVENTTARGET"] == "Hidden1" )
{
// Response.Write("Hidden1.Value: " + Hidden1.Value);if ( Hidden1.Value == "true" )
// User answered OK
else
// User answered Cancel
}Hidden1.Value = string.Empty;
NC...
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NC01
4/19/2006 7:43:28 PM
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