Javascript validation on click of button!

Question

Dear friends! I have a following problem. I have one datagrid in which i am generating dynamic checkboxes by binding data from database. Now I want to check whether any of these checkbox is checked on click on this button and prompt a message to the user. This button is out of datagrid.Ok. Please help! Thanks and Regards! Amol!

sathyaselvi_v · Answer

i tried to solve this using code behind. the source code is btnSmt.Attributes.Add(onClick javascript:setMailFlag('M')); if(hdnChk.Value.ToString().Trim()==M) { foreach(DataGridItem dgItem in dsUserList.Items) { CheckBox ChkBxItem = (CheckBox)dgItem.FindControl(chkDatarid); //Label lblChkBxItem = (Label)dgItem.FindControl(lblChkBoxName); if(ChkBxItem.Checked) { intCnt++; strHdnLogin = (+((Label)dgItem.FindControl(lblHdnLogin)).Text.ToString()+); strChkValue +=
+intCnt+. +((Label)dgItem.FindControl(lblHdnId)).Text.ToString()+strHdnLogin; } } } if(intCnt>0) { Response.Write( ); Response.Write(alert(+strChkValue+);); Response.Write( ); } else { Response.Write( ); Response.Write(alert('No one value checked');); Response.Write( ); } In javascript function setMailFlag(val) { var cid=document.List.hdnCourse.value; var course=document.List.hdnCourseName.value; document.List.hdnChk.value=val; document.List.action=List.aspx?course=+cid+&Coursename=+course; document.List.submit(); return true; } Try it all the best

normanordas · Answer

myButton.Attributes.Add(onclick checkFunction()); ... wat if the checkFunction() accepts a value like checkFunction(name) how do i passed the value of a webcontrol textbox?

Administrator · Answer

I guess this button is the server control. If so add to your code-behind something like this: myButton.Attributes.Add(onclick checkFunction()); The checkFunction is the name of JavaScript function you use to validate data. Mike