Use Multiple Document Interface (MDI) In Windows Form Using C#

Step 2

Now open your Form1.cs [Design] file, where we create our design for MDI. We will drag two buttons to start our MDI in Form1.cs [Design]. You can see the following screen:.



In Form1.cs design, you have to change the width of the form as it will open another form, so your form will not be visible.. Therefore change its width. There is one more property - IsMdiContainer, make it True.

Again go back to your Project - Add New Item and select Form2.cs. In the same way again add new form - - Form3.cs.

CODE CHAMBER

Right click on the blank part of Form1.cs and View Code. You will see you are entered in the code part of the form. Write the following code and then Press F5 to run the project.