Csharp/C Sharp by API/System.Windows.Forms/MessageBox
MessageBox.Show
<source lang="csharp">
using System.Windows.Forms;
class TwoForms {
public static void Main() { Form form1 = new Form(); Form form2 = new Form(); form1.Text = "Form passed to Run()"; form2.Text = "Second form"; form2.Show(); Application.Run(form1); MessageBox.Show("Application.Run() has returned control back to Main.","TwoForms"); }
}
</source>
MessageBox.Show(String, String);
<source lang="csharp"> using System; using System.Windows.Forms; class MainForm : Form {
private Label label1; private TextBox textBox1; private Button button1; public MainForm() { this.label1 = new Label(); this.textBox1 = new TextBox(); this.button1 = new Button(); this.SuspendLayout(); this.label1.Location = new System.Drawing.Point(16, 36); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(128, 16); this.label1.TabIndex = 0; this.label1.Text = "Please enter your name:"; this.textBox1.Location = new System.Drawing.Point(152, 32); this.textBox1.Name = "textBox1"; this.textBox1.TabIndex = 1; this.textBox1.Text = ""; this.button1.Location = new System.Drawing.Point(109, 80); this.button1.Name = "button1"; this.button1.TabIndex = 2; this.button1.Text = "Enter"; this.button1.Click += new System.EventHandler(this.button1_Click); this.ClientSize = new System.Drawing.Size(292, 126); this.Controls.Add(this.button1); this.Controls.Add(this.textBox1); this.Controls.Add(this.label1); this.Name = "form1"; this.Text = "Visual C#"; this.ResumeLayout(false); } private void button1_Click(object sender, System.EventArgs e) { System.Console.WriteLine("User entered: " + textBox1.Text); MessageBox.Show("Welcome, " + textBox1.Text, "Visual C#"); } [STAThread] public static void Main() { Application.EnableVisualStyles(); Application.Run(new MainForm()); }
}
</source>
MessageBox.Show(String value)
<source lang="csharp"> using System; using System.Drawing; using System.ruponentModel; using System.Windows.Forms; public class frmLogin : System.Windows.Forms.Form {
System.Windows.Forms.TextBox txtUser; System.Windows.Forms.Button btnOK; System.Windows.Forms.Button btnCancel; public frmLogin() { txtUser = new System.Windows.Forms.TextBox(); txtUser.Location = new Point(30, 15); txtUser.Size = new Size(250, 20); txtUser.Text = ""; txtUser.Name = "txtUser"; this.Controls.Add(txtUser); btnOK = new System.Windows.Forms.Button(); btnOK.Location = new Point(40,(txtUser.Location.Y + txtUser.Size.Height + btnOK.Size.Height)); btnOK.Text = "OK"; btnOK.Name = "btnOK"; this.Controls.Add(btnOK); btnCancel = new System.Windows.Forms.Button(); btnCancel.Location = new Point((this.Size.Width - btnCancel.Size.Width) - 40, (txtUser.Location.Y + txtUser.Size.Height + btnOK.Size.Height)); btnCancel.Text = "Cancel"; btnCancel.Name = "btnCancel"; this.Controls.Add(btnCancel); this.Size = new Size(this.Size.Width, btnCancel.Location.Y + btnCancel.Size.Height + 60); btnCancel.Click += new System.EventHandler(btnCancelHandler); btnOK.Click += new System.EventHandler(btnEventHandler); } private void btnEventHandler(object sender, System.EventArgs e) { MessageBox.Show(((Button)sender).Name); } private void btnCancelHandler(object sender, System.EventArgs e) { MessageBox.Show("The second handler"); } [STAThread] static void Main() { Application.Run(new frmLogin()); }
}
</source>