Online backup: For eg Database replication
OffLine BackUp:Restrong database in to stroring device
Let's see an Simple example to understand.
Assuming that we have a Textbox and Button on the ASP.NET page like below.
<asp:TextBox ID="txtName" runat="server"></asp:TextBox><asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClientClick="return validate()" />
Now, Add the below code snippet on the page source.
<script language="javascript" type="text/javascript">function ValidateTextBox() { if(document.getElementById("<%=txtName.ClientID%>").value == "") { alert("Name Field Cannot be Empty"); document.getElementById("<%=txtName.ClientID%>").focus(); return false; } return true;}</script>
Once you have completed the above steps, just run the project and see the result.
Regards,
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