Here Mudassar Ahmed Khan has explained with an example, how to implement Indian PAN Card Number validation in Windows Forms (WinForms) Application using C# and VB.Net.

When the Submit Button is clicked, the PAN Card Number in TextBox will be validated using Regular Expression (Regex) using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to perform Indian PAN Card Number validation using Data Annotations and Regular Expressions on Client Side in ASP.Net MVC Razor.

The Client Side PAN Card Number TextBox validation will be performed using Model class and Data Annotation attributes in ASP.Net MVC Razor.

Here Mudassar Ahmed Khan has explained with an example, how to implement Indian PAN Card Number validation using Regular Expression (Regex) in jQuery.

The PAN Card Number entered in the TextBox will be validated on Button click using Regular Expression (Regex) in jQuery.

Here Mudassar Ahmed Khan has explained with an example, how to implement Indian PAN Card Number validation using Regular Expression (Regex) in JavaScript.

The PAN Card Number entered in the TextBox will be validated on Button click using Regular Expression (Regex) in JavaScript.

Here Mudassar Ahmed Khan has explained with an example, how to implement Indian PAN Card Number validation using RegularExpressionValidator in ASP.Net.

The PAN Card Number entered in the TextBox will be validated on Button click using Regular Expression (Regex) and RegularExpressionValidator in ASP.Net.

Here Mudassar Ahmed Khan has explained with an example, how to validate TextBox inside GridView using jQuery on Button Click in ASP.Net.

When the Submit Button is clicked, using a jQuery each loop, all the TextBoxes inside the GridView will be validated and respective Error messages will be displayed using jQuery in ASP.Net.

Here Mudassar Ahmed Khan has explained with an example, how to validate TextBox inside GridView using JavaScript on Button Click in ASP.Net.

When the Submit Button is clicked, using a FOR loop, all the TextBoxes inside the GridView will be validated and respective Error messages will be displayed using JavaScript in ASP.Net.

Here Mudassar Ahmed Khan has explained with an example, how to check uncheck all (select unselect all) CheckBoxes in CheckedListBox in Windows Forms (WinForms) Application using C# and VB.Net.

The check uncheck all functionality will be done using an additional CheckBox that will act as Check All CheckBox for the CheckedListBox in Windows Forms (WinForms) Application using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to display Byte Array as Image in PictureBox control in Windows Forms (WinForms) Application using C# and VB.Net.

The Image file will be selected from Folder (Directory) using the OpenFileDialog control and then the chosen Image file will be converted to Byte Array and then displayed in PictureBox control in Windows Forms (WinForms) Application using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to check uncheck all (select unselect all) CheckBoxes in ASP.Net CheckBoxList using C# and VB.Net.

The check uncheck all functionality will be done using an additional CheckBox that will act as Check All CheckBox for the ASP.Net CheckBoxList control.

Here Mudassar Ahmed Khan has explained with an example, how to use multiple Regular Expression (Regex) Data Annotation attributes for validation in ASP.Net MVC Razor.

The validation will be performed on Client Side using Model class and multiple Regular Expression (Regex) Data Annotation attributes in ASP.Net MVC Razor.

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

Inside the OnRowDataBound event handler, the TextBox will be referenced and disabled based on some condition in ASP.Net using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to hide GridView column at runtime in ASP.Net using C# and VB.Net.

The GridView column will be hidden at runtime when CheckBox is unchecked in ASP.Net using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to hide GridView column programmatically in ASP.Net using C# and VB.Net.

The GridView column will be programmatically hidden when CheckBox is unchecked in ASP.Net using C# and VB.Net.

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 dynamically show hide TemplateField (ItemTemplate) column in ASP.Net GridView using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to open (view) PDF files from Server in ASP.Net using C# and VB.Net.

This article will explain how to view PDF files from Server directly within browser without downloading them.

Here Mudassar Ahmed Khan has explained with an example, how to open (view) PDF files without using IFRAME in ASP.Net using C# and VB.Net.

This article will explain how to view PDF files directly within browser without downloading them.

Here Mudassar Ahmed Khan has explained with an example, how to implement jQuery AutoComplete TextBox inside GridView in ASP.Net using C# and VB.Net.

The jQuery AutoComplete Plugin is applied to all the TextBoxes and the data for the jQuery AutoComplete TextBox will be populated from the SQL Server database in ASP.Net using C# and VB.Net.

Here Mudassar Ahmed Khan has explained with an example, how to display AJAX ModalPopupExtender Modal Popup inside RowCommand event of GridView in ASP.Net using C# and VB.Net.

Inside the GridView OnRowCommand event handler, the GridView Selected Row details will be fetched and displayed in the ASP.Net AJAX ModalPopupExtender Modal Popup.

Here Mudassar Ahmed Khan has explained, how to display the GridView Selected Row Details in ASP.Net AJAX ModalPopupExtender Modal Popup using C# and VB.Net.

Inside the GridView SelectedIndexChanged event handler, the GridView Selected Row details will be fetched and displayed in the ASP.Net AJAX ModalPopupExtender Modal Popup.

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 how to make solve the problem of ValidateRequest = 'false' not working in .Net 4.0 and 4.5 in ASP.Net.

ValidateRequest = 'false' is used to supress the exception: A potentially dangerous Request.Form value was detected from the client in ASP.Net and allow posting scripts and HTML content in ASP.Net.

The ValidateRequest property is a .Net 2.0 and .Net 3.5 property and hence in order to work on .Net 4.0 and .Net 4.5 an additional property is needed.

Here Mudassar Ahmed Khan has written an informative article on how to download Crystal Reports for Visual Studio 2019 (VS 2019).