ASP.NET Discussion Boards

i am having a text box and a button.i want to validate that textbox using javascript.when i click on the submit button one alert message will come that textbox must be filled out and if i am entering some value to that textbox it will show what value i have entered in that alert message.i want a sample code for this.

Try This

XML

<script type="text/javascript">
function jsTest()
{
    if (document.getElementById("<%=txtBox1.ClientID%>").value == "") {
        alert("Please Select a Pay From Option");
        document.getElementById("<%=txtBox1.ClientID%>").focus();
        return false;
    }
    else {
        alert(document.getElementById("<%=txtBox1.ClientID%>").value);
    }
}
</script>

It's as easy as drink water call below function

JavaScript

<script type="text/javascript">
function Confirm() {
    return confirm("Are U sure to delete this file؟");
}

C#

<asp:Button ID="BtnDelete" runat="server" Text="delete" Width="95" OnClientClick="if (!Confirm()) return false;" UseSubmitBehavior="False"/>