הפתרון הוא להשתמש ב- BindingSource מה- Toolbox תחת הקטגוריה Data
הנה דוגמא קטנה:
מתוך הקובץ Form1.Designer.cs
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.txtFirstName = new System.Windows.Forms.TextBox();
this.bindingSource1 = new System.Windows.Forms.BindingSource(this.components);
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.txtLastName = new System.Windows.Forms.TextBox();
this.btnSelectAdam = new System.Windows.Forms.Button();
this.btnSelectEve = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.bindingSource1)).BeginInit();
this.SuspendLayout();
//
// txtFirstName
//
this.txtFirstName.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.bindingSource1, "FirstName", true));
this.txtFirstName.Location = new System.Drawing.Point(113, 50);
this.txtFirstName.Name = "txtFirstName";
this.txtFirstName.Size = new System.Drawing.Size(111, 22);
this.txtFirstName.TabIndex = 0;
//
// bindingSource1
//
this.bindingSource1.AllowNew = false;
this.bindingSource1.DataSource = typeof(FormBindingSample.Person);
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(17, 50);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(80, 17);
this.label1.TabIndex = 1;
this.label1.Text = "First Name:";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(14, 90);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(80, 17);
this.label2.TabIndex = 2;
this.label2.Text = "Last Name:";
//
// txtLastName
//
this.txtLastName.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.bindingSource1, "LastName", true));
this.txtLastName.Location = new System.Drawing.Point(113, 90);
this.txtLastName.Name = "txtLastName";
this.txtLastName.Size = new System.Drawing.Size(111, 22);
this.txtLastName.TabIndex = 3;
//
// btnSelectAdam
//
this.btnSelectAdam.Location = new System.Drawing.Point(37, 197);
this.btnSelectAdam.Name = "btnSelectAdam";
this.btnSelectAdam.Size = new System.Drawing.Size(91, 23);
this.btnSelectAdam.TabIndex = 4;
this.btnSelectAdam.Text = "Adam";
this.btnSelectAdam.UseVisualStyleBackColor = true;
this.btnSelectAdam.Click += new System.EventHandler(this.btnSelectAdam_Click);
//
// btnSelectEve
//
this.btnSelectEve.Location = new System.Drawing.Point(146, 197);
this.btnSelectEve.Name = "btnSelectEve";
this.btnSelectEve.Size = new System.Drawing.Size(102, 23);
this.btnSelectEve.TabIndex = 5;
this.btnSelectEve.Text = "Eve";
this.btnSelectEve.UseVisualStyleBackColor = true;
this.btnSelectEve.Click += new System.EventHandler(this.btnSelectEve_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 16F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(612, 525);
this.Controls.Add(this.btnSelectEve);
this.Controls.Add(this.btnSelectAdam);
this.Controls.Add(this.txtLastName);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Controls.Add(this.txtFirstName);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this.bindingSource1)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.TextBox txtFirstName;
private System.Windows.Forms.BindingSource bindingSource1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox txtLastName;
private System.Windows.Forms.Button btnSelectAdam;
private System.Windows.Forms.Button btnSelectEve;
}
ובקובץ Form1.cs
public partial class Form1 : Form
{
private List<Person> _people;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
_people = new List<Person> {
new Person { FirstName = "Adam", LastName = "First"},
new Person { FirstName = "Eve", LastName = "Second"},
};
bindingSource1.DataSource = _people[0];
}
private void btnSelectAdam_Click(object sender, EventArgs e)
{
bindingSource1.DataSource = _people[0];
}
private void btnSelectEve_Click(object sender, EventArgs e)
{
bindingSource1.DataSource = _people[1];
}
}
ה- Class של הדאטה הוא: Person:
public class Person
{
public string FirstName { get; set; }
public string LastName { get; set; }
}
--- Adar Wesley
