Open Windows Form in specific area while click on left side navigation bar using C# and VB.Net

Hi smile,

Add a toolStrip in the form and set the doc property to Left.

Then add ToolStrip button to it for displaying the form on click.

Then in the right side add a Panel control which will be used to open the form inside it.

Check this example. Now please take its reference and correct your code.

Code

C#

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void StudentForm_Click(object sender, EventArgs e)
    {
        pnlForms.Controls.Clear();
        StudentForm form = new StudentForm();
        form.TopLevel = false;
        pnlForms.Controls.Add(form);
        form.FormBorderStyle = FormBorderStyle.None;
        form.Dock = DockStyle.Fill;
        form.Show();
    }

    private void ExamForm_Click(object sender, EventArgs e)
    {
        pnlForms.Controls.Clear();
        ExamForm form = new ExamForm();
        form.TopLevel = false;
        pnlForms.Controls.Add(form);
        form.FormBorderStyle = FormBorderStyle.None;
        form.Dock = DockStyle.Fill;
        form.Show();
    }

    private void FeeForm_Click(object sender, EventArgs e)
    {
        pnlForms.Controls.Clear();
        FeeForm form = new FeeForm();
        form.TopLevel = false;
        pnlForms.Controls.Add(form);
        form.FormBorderStyle = FormBorderStyle.None;
        form.Dock = DockStyle.Fill;
        form.Show();
    }
}

VB.Net

Public Class Form1
    Private Sub StudentForm_Click(ByVal sender As Object, ByVal e As EventArgs)
        pnlForms.Controls.Clear()
        Dim form As StudentForm = New StudentForm()
        form.TopLevel = False
        pnlForms.Controls.Add(form)
        form.FormBorderStyle = FormBorderStyle.None
        form.Dock = DockStyle.Fill
        form.Show()
    End Sub

    Private Sub ExamForm_Click(ByVal sender As Object, ByVal e As EventArgs)
        pnlForms.Controls.Clear()
        Dim form As ExamForm = New ExamForm()
        form.TopLevel = False
        pnlForms.Controls.Add(form)
        form.FormBorderStyle = FormBorderStyle.None
        form.Dock = DockStyle.Fill
        form.Show()
    End Sub

    Private Sub FeeForm_Click(ByVal sender As Object, ByVal e As EventArgs)
        pnlForms.Controls.Clear()
        Dim form As FeeForm = New FeeForm()
        form.TopLevel = False
        pnlForms.Controls.Add(form)
        form.FormBorderStyle = FormBorderStyle.None
        form.Dock = DockStyle.Fill
        form.Show()
    End Sub
End Class

Screenshot