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Как заставить свойство "Text" компонента Label забиндиться на свойство TheChar из пользовательского класса
09.10.2012, 18:55. Показов 1710. Ответов 3
Здравствуйте, не получается заставить свойство "Text" компонента Label забиндиться на свойство TheChar из моего класса, основанного на NumericUpDown. Код
Form1:
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| namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public class MyNumericUpDown : NumericUpDown
{
public MyNumericUpDown(object ob) : base()
{
Parent = (ob as Form1);
Size = new Size(120, 20);
Location = new Point(181, 25);
Minimum = 33;
Maximum = 255;
ValueChanged += new EventHandler(ValueHasBeenChanged);
Value = 33;
}
public string TheChar { get; set; }
public void ValueHasBeenChanged(object sender, EventArgs e)
{
var control = sender as MyNumericUpDown;
TheChar = ((char)(Convert.ToInt32(control.Value))).ToString();
}
}
public Form1()
{
var numeric = new MyNumericUpDown(this);
numeric.Show();
InitializeComponent();
var Bind = new Binding("Text", numeric, "TheChar");
label2.DataBindings.Add(Bind); // если эту строчку не комментировать, то label не отображается...
}
}
} |
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И дизайнер
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| namespace WindowsFormsApplication1
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.label2 = new System.Windows.Forms.Label();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(203, 9);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(74, 13);
this.label1.TabIndex = 1;
this.label1.Text = "Код Символа";
//
// groupBox1
//
this.groupBox1.Controls.Add(this.label2);
this.groupBox1.Location = new System.Drawing.Point(121, 51);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(224, 141);
this.groupBox1.TabIndex = 2;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "Wingdings";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(104, 75);
this.label2.Name = "label2";
this.label2.Text = "Начало"; //Пробный текст
this.label2.Size = new System.Drawing.Size(0, 13);
this.label2.TabIndex = 0;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(483, 330);
this.Controls.Add(this.groupBox1);
this.Controls.Add(this.label1);
this.Name = "Form1";
this.Text = "Form1";
this.groupBox1.ResumeLayout(false);
this.groupBox1.PerformLayout();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Label label1;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.Label label2;
}
} |
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