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How to create Login Form and give privileges to users to open particular forms only in c#.net Windows form..?

Selva Ganapathy · Answer

Hi Angel, I have attached a simple sample for this login logic for Windows Forms you have asked by using the following code snippet, Here you can select the user name from a combobox and the password is "tamil_valarga". Form 1: namespace Login { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { if (this.textBox2.Text == "tamil_valarga") { if (this.comboBox1.Text == "User 1") { new User_1().Show(); } else if (this.comboBox1.Text == "User 2") { new User_2().Show(); } else if (this.comboBox1.Text == "Admin") { new Admin().Show(); } else { MessageBox.Show("User Name is wrong or not have permission to access this application"); } } else { MessageBox.Show("Password you have entered is wrong"); } } private void button2_Click(object sender, EventArgs e) { this.Close(); } } } private void InitializeComponent() { this.textBox2 = new System.Windows.Forms.TextBox(); this.label1 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); this.button1 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.comboBox1 = new System.Windows.Forms.ComboBox(); this.SuspendLayout(); // // textBox2 // this.textBox2.Location = new System.Drawing.Point(113, 83); this.textBox2.Name = "textBox2"; this.textBox2.PasswordChar = '*'; this.textBox2.Size = new System.Drawing.Size(155, 20); this.textBox2.TabIndex = 1; // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(33, 38); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(60, 13); this.label1.TabIndex = 2; this.label1.Text = "User Name"; // // label2 // this.label2.AutoSize = true; this.label2.Location = new System.Drawing.Point(33, 83); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(59, 13); this.label2.TabIndex = 3; this.label2.Text = "Pass Word"; // // button1 // this.button1.Location = new System.Drawing.Point(63, 129); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(70, 26); this.button1.TabIndex = 4; this.button1.Text = "Enter"; this.button1.UseVisualStyleBackColor = true; this.button1.Click += new System.EventHandler(this.button1_Click); // // button2 // this.button2.Location = new System.Drawing.Point(156, 129); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(79, 26); this.button2.TabIndex = 5; this.button2.Text = "Exit"; this.button2.UseVisualStyleBackColor = true; this.button2.Click += new System.EventHandler(this.button2_Click); // // comboBox1 // this.comboBox1.FormattingEnabled = true; this.comboBox1.Items.AddRange(new object[] { "User 1", "User 2", "Administrator"}); this.comboBox1.Location = new System.Drawing.Point(112, 38); this.comboBox1.Name = "comboBox1"; this.comboBox1.Size = new System.Drawing.Size(155, 21); this.comboBox1.TabIndex = 6; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(303, 181); this.Controls.Add(this.comboBox1); this.Controls.Add(this.button2); this.Controls.Add(this.button1); this.Controls.Add(this.label2); this.Controls.Add(this.label1); this.Controls.Add(this.textBox2); this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None; this.Name = "Form1"; this.Text = "Form1"; this.ResumeLayout(false); this.PerformLayout(); } Regards, Selva Ganapathy K