Here Mudassar Ahmed Khan has explained with an example, how to activate TextBox if another option is selected in DropDownBox using JavaScript and jQuery.

When the Other (option) in DropDownList is selected, the TextBox will be enabled else disabled.

Here Mudassar Ahmed Khan has explained with an example, how to check for duplicate values while inserting in GridView without SQL in ASP.Net using C# and VB.Net.

When the Add Button is clicked, the values of TextBoxes will be compared with the Row values of the GridView using ASP.Net CustomValidator and JavaScript and if the values are duplicate, error messages will be displayed.

Here Mudassar Ahmed Khan has explained with an example, how to Toggle i.e. show and hide HTML DIV on Button Click using JavaScript and jQuery.

When the Button is clicked, the HTML DIV will be shown and when again the same Button is clicked the HTML DIV will be hidden.

Here Mudassar Ahmed Khan has explained with an example, how to show and hide HTML DIV on Button Click using JavaScript and jQuery.

When the Yes Button is clicked, the HTML DIV will be shown and when the No Button is clicked the HTML DIV will be hidden.