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    <p>Change your login form so that it returns DialogResult.OK when login is successful:</p> <pre><code>public partial class loginfrm : Form { public enum UserTypes { admin, salesman, accountant, stockmanager } private UserTypes _UserType; public UserTypes UserType { get { return _UserType; } } public loginfrm() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { if (txt_userid.Text == "user" &amp;&amp; txt_password.Text == "user") { // ... set _UserType somehow ... this._UserType = UserTypes.salesman; this.DialogResult = System.Windows.Forms.DialogResult.OK; } else { MessageBox.Show("Invalid User Name &amp; password", "Error"); } } } </code></pre> <p>Now, back in your main form, you can check that result and change the TabControl directly:</p> <pre><code> private void fudafrm_Load(object sender, EventArgs e) { this.Hide(); // not necessary from the Load() event loginfrm f2 = new loginfrm(); if (f2.ShowDialog() == System.Windows.Forms.DialogResult.OK) { switch(f2.UserType) { case loginfrm.UserTypes.admin: // remove nothing break; case loginfrm.UserTypes.salesman: tabControl1.TabPages.Remove(tabPage1); tabControl1.TabPages.Remove(tabPage3); break; case loginfrm.UserTypes.accountant: tabControl1.TabPages.Remove(tabPage1); tabControl1.TabPages.Remove(tabPage2); tabControl1.TabPages.Remove(tabPage5); break; case loginfrm.UserTypes.stockmanager: tabControl1.TabPages.Remove(tabPage1); tabControl1.TabPages.Remove(tabPage4); tabControl1.TabPages.Remove(tabPage7); tabControl1.TabPages.Remove(tabPage8); break; } } else { Application.Exit(); // ? } } </code></pre> <p>You can set DialogResult to Cancel to indicate a failed login.</p>
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    1. POControlling Tabs Through Other forms C# Winform Application
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    1. COGreat Perfect.!! thanks. @Idle_Mind
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      1. USMuhammad Azeem Khan
    2. COcan i throw my own dialog like user Dialog (because there is limited dialog,Unable for all user) user1 = admin (show all tab) user2 = salesman (remove tab 1,3) user3 = accountant (remove 1,2,5) user4 = stockmanager (1,4,7,8) @Idle_Mind
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    3. COYou'd use the same appraoch, but also create an **enum** to represent admin, salesman, accountant, and stockmanager. Now create a Public Property in loginfrm to hold whatever the logged in user is. Finally, when "OK" is returned to ShowDialog() you can read the Public Property to determine which tabs to change.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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