C# winform drop-down box multiple selection, custom control
Click me to download the source file.
The effect is shown in the figure below:
the multi-selection effect of the drop-down box can be realized.
Custom control, drag the above custom control to the project to use it
The method of adding options to the drop-down box (similar to ComboBox)
PowerComboBox5.Items.AddRange(new object[] {
"---Desktop",
"VB.NET",
"C#",
"Delphi",
"Java",
"C++",
"---Web",
"ASP",
"PHP",
"Ruby",
"Java",
"Perl"});