Alert box from code behind

Posted Date: 06 Jul 2012 Posted By:: preethi m Member Level: Silver Member Rank: 0 Points: 5 Responses: 1

Hi,

I want to display alert box in button click event from code behind.
below code is working fine but the page is blinking when alert pops out.
I need to display popup with out page blink.

string scriptMessage = "<script language= javascript >function window.onload(){alert('invalid phone number');}</script>";
if (!ClientScript.IsClientScriptBlockRegistered("MyMessage"))
{
ClientScript.RegisterClientScriptBlock(this.GetType(),"MyMessage", scriptMessage.ToString());
}

Any suggestions please.

Thanks.

Responses

#679313 Author:

SonyMadhu Member Level: Gold Member Rank: 45 Date: 08/Jul/2012 Rating: 2 out of 5

Points: 4

Hi Preethi,

To call alert in code behind


ScriptManager.RegisterClientScriptBlock(this, typeof(Page), "Hi", "alert('The Field " + sMandatoryFields + " is mandatory');", true);

And To call javascript function from codebehind


Ex:
<script type="javascript">
function sampleValidation()
{
if(document.getElementById('txt1').value=="")
{
alert("textbox shouldn't be empty..");
}
}
</script>

Server side:
ClientScript.RegisterStartupScript(GetType(), "anyString", "sampleValidation();", true);

Sometimes
btn.Attributes.Add("onclick", "return sampleValidation();")

Hope this will help you

Regards,
Madhu
Be so hapy wen others look at you,they become hapy too

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