Get controls on a form and verify its type : Control « GUI Windows Forms « C# / CSharp Tutorial

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C# / CSharp Tutorial » GUI Windows Forms » Control 
23.53.7.Get controls on a form and verify its type
Get controls on a form and verify its type
using System;
using System.Windows.Forms;

public class GetControlOnFormDemo {
    [STAThread]
    public static void Main(string[] args)
    {
        Application.Run(new GetControlsOnForm());
    }
}

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

    private void cmdProcessAll_Click(object sender, System.EventArgs e)
    {
        ProcessControls(this);
    }

    private void ProcessControls(Control ctrl)
    {
        // Ignore the control unless it's a textbox.
        if (ctrl.GetType() == typeof(TextBox))
        {
            ctrl.Text = "";
        }

        foreach (Control ctrlChild in ctrl.Controls)
        {
            ProcessControls(ctrlChild);
        }
    }

}
partial class GetControlsOnForm
{
    private System.Windows.Forms.TextBox textBox1;
    private System.Windows.Forms.TextBox textBox2;
    private System.Windows.Forms.TextBox textBox3;
    private System.Windows.Forms.TextBox textBox4;
    private System.Windows.Forms.Button cmdProcessAll;

    private System.ComponentModel.IContainer components = null;

    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    private void InitializeComponent()
    {
        this.textBox1 = new System.Windows.Forms.TextBox();
        this.textBox2 = new System.Windows.Forms.TextBox();
        this.textBox3 = new System.Windows.Forms.TextBox();
        this.textBox4 = new System.Windows.Forms.TextBox();
        this.cmdProcessAll = new System.Windows.Forms.Button();
        this.SuspendLayout();

        this.textBox1.Location = new System.Drawing.Point(1616);
        this.textBox1.Name = "textBox1";
        this.textBox1.Size = new System.Drawing.Size(25220);
        this.textBox1.TabIndex = 0;
        this.textBox1.Text = "textBox1";

        this.textBox2.Location = new System.Drawing.Point(1648);
        this.textBox2.Name = "textBox2";
        this.textBox2.Size = new System.Drawing.Size(25220);
        this.textBox2.TabIndex = 1;
        this.textBox2.Text = "textBox2";

        this.textBox3.Location = new System.Drawing.Point(1680);
        this.textBox3.Name = "textBox3";
        this.textBox3.Size = new System.Drawing.Size(25220);
        this.textBox3.TabIndex = 2;
        this.textBox3.Text = "textBox3";

        this.textBox4.Location = new System.Drawing.Point(16112);
        this.textBox4.Name = "textBox4";
        this.textBox4.Size = new System.Drawing.Size(25220);
        this.textBox4.TabIndex = 3;
        this.textBox4.Text = "textBox4";

        this.cmdProcessAll.Location = new System.Drawing.Point(20220);
        this.cmdProcessAll.Name = "cmdProcessAll";
        this.cmdProcessAll.Size = new System.Drawing.Size(11628);
        this.cmdProcessAll.TabIndex = 4;
        this.cmdProcessAll.Text = "Process Text Boxes";
        this.cmdProcessAll.Click += new System.EventHandler(this.cmdProcessAll_Click);

        this.components = new System.ComponentModel.Container();
        this.Controls.AddRange(new System.Windows.Forms.Control[] { this.cmdProcessAll,
                                  this.textBox4,
                                  this.textBox3,
                                  this.textBox2,
                                  this.textBox1});
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.Text = "GetControlsOnForm";
    }
}
23.53.Control
23.53.1.Control: TabIndex, Size and LocationControl: TabIndex, Size and Location
23.53.2.Control Tag PropertyControl Tag Property
23.53.3.Control Size and Location - DynamicControl Size and Location - Dynamic
23.53.4.Control Size and LocationControl Size and Location
23.53.5.Override the DefaultSize property to gain better performance
23.53.6.Create User Control based on Control classCreate User Control based on Control class
23.53.7.Get controls on a form and verify its typeGet controls on a form and verify its type
23.53.8.Set Caption(title) of the formSet Caption(title) of the form
23.53.9.Set form forground colorSet form forground color
23.53.10.Render onto the buttonRender onto the button
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