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 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 written an informative article on how to download Crystal Reports for Visual Studio 2019 (VS 2019).