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Thursday, 29 May 2014

Open For MDI Parent Using C#.Net and VB.Net

5/29/2014 - By Pranav Singh 0

Whenever we create a windows application and if we are using MDP parent form in that case the process for opening form in MDI window is different as we open form in not in MDI parent.


Now for this article first we will create a new windows application and add two forms form1 and form2. Now take form1 and got to property window to make the for MDI window form. How to make a form 
MDI Form in window application C#.Net.



Here is the code for this article

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace ProjectDemo_Windows
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void openForm2ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (CheckMdiClientDuplicatesForm("ProjectDemo-Windows.Form2") == true)
            {
                Form1 objform1 = new Form1();
                objform1.MdiParent = this;
                objform1.Show();
            }
        }
        public bool CheckMdiClientDuplicatesForm(string windowsFormName)
        {
            if (ActiveMdiChild != null)
            {
                if (ActiveMdiChild.Name != windowsFormName.Split('.')[1].ToString())
                {
                    ActiveMdiChild.Close();
                }
            }
            Form[] mdichld = this.MdiChildren;
            if (this.MdiChildren.Length == 0)
            {
                return true;
            }
            foreach (Form selfm in mdichld)
            {
                string str = selfm.Name;
                str = str.IndexOf(windowsFormName).ToString();
                if (str != "-1")
                {
                    return true;
                }
            }
            return false;
        }
    }
}

Now run the application


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