Here Mudassar Ahmed Khan has explained with an example, how to check whether CheckBox in GridView is checked or not in ASP.Net using C# and VB.Net.

When the Button is clicked, a loop will be executed over GridView Rows and then it will be determined whether the CheckBox inside the GridView Row is checked or not in ASP.Net.

Here Mudassar Ahmed Khan has explained with an example, how to get list of Sheet (WorkSheet) names of Excel file in ASP.Net using C# and VB.Net.

The Excel file will be first uploaded and copied to a Folder (Directory) on Server and then it will be read and opened using OLEDB and the Sheet (WorkSheet) Names of the Excel file will be fetched.

Here Mudassar Ahmed Khan has explained with an example, how to encode QueryString parameter in NavigateUrl of HyperLink inside ASP.Net GridView using C# and VB.Net.

The QueryString parameters will be encoded inside the Eval function using UrlEncode function of the HttpUtility class in ASP.Net.

Here Mudassar Ahmed Khan has explained with an example, how to display Image based on condition in GridView in ASP.Net using C# and VB.Net.

The ImageUrl property of the Image control is set with an Inline Expression which compares the value of the column and based on the value, the respective Image URL is returned which is used to conditionally display the Image in GridView.