Csharp/C Sharp/Database ADO.net/DataBinding TrackBar

Scrolling Data Binding

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Configuration; using System.Data.SqlClient; public class Form1 : Form {

   public Form1() {
       InitializeComponent();
   }
   private void retrieve_Click(object sender, EventArgs e) {
       retrieve.Enabled = false;
       ds = CreateDataSet();
       textName.DataBindings.Add("Text", ds, "Products.ProductName");
       textQuan.DataBindings.Add("Text", ds, "Products.QuantityPerUnit");
       trackBar.Minimum = 0;
       trackBar.Maximum = this.BindingContext[ds, "Products"].Count - 1;
       textName.Enabled = true;
       textQuan.Enabled = true;
       trackBar.Enabled = true;
   }
   private DataSet CreateDataSet() {
       string customers = "SELECT * FROM Products";
       DataSet ds = new DataSet();
       using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["northwind"].ConnectionString)) {
           SqlDataAdapter da = new SqlDataAdapter(customers, con);
           da.Fill(ds, "Products");
       }
       return ds;
   }
   private void trackBar_Scroll(object sender, EventArgs e) {
       this.BindingContext[ds, "Products"].Position = trackBar.Value;
   }
   private DataSet ds;
   private void InitializeComponent() {
       this.retrieve = new System.Windows.Forms.Button();
       this.textName = new System.Windows.Forms.TextBox();
       this.textQuan = new System.Windows.Forms.TextBox();
       this.trackBar = new System.Windows.Forms.TrackBar();
       ((System.ruponentModel.ISupportInitialize)(this.trackBar)).BeginInit();
       this.SuspendLayout();
       this.retrieve.Location = new System.Drawing.Point(12, 12);
       this.retrieve.Size = new System.Drawing.Size(75, 23);
       this.retrieve.Text = "Retrieve";
       this.retrieve.UseVisualStyleBackColor = true;
       this.retrieve.Click += new System.EventHandler(this.retrieve_Click);
       this.textName.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.textName.Enabled = false;
       this.textName.Location = new System.Drawing.Point(12, 42);
       this.textName.Size = new System.Drawing.Size(268, 20);
       this.textQuan.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.textQuan.Enabled = false;
       this.textQuan.Location = new System.Drawing.Point(13, 69);
       this.textQuan.Size = new System.Drawing.Size(267, 20);
       this.trackBar.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
                   | System.Windows.Forms.AnchorStyles.Right)));
       this.trackBar.Enabled = false;
       this.trackBar.Location = new System.Drawing.Point(13, 96);
       this.trackBar.Size = new System.Drawing.Size(267, 45);
       this.trackBar.Scroll += new System.EventHandler(this.trackBar_Scroll);
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(292, 148);
       this.Controls.Add(this.trackBar);
       this.Controls.Add(this.textQuan);
       this.Controls.Add(this.textName);
       this.Controls.Add(this.retrieve);
       this.Name = "Form1";
       this.Text = "ScrollingDataBinding";
       ((System.ruponentModel.ISupportInitialize)(this.trackBar)).EndInit();
       this.ResumeLayout(false);
       this.PerformLayout();
   }

   private System.Windows.Forms.Button retrieve;
   private System.Windows.Forms.TextBox textName;
   private System.Windows.Forms.TextBox textQuan;
   private System.Windows.Forms.TrackBar trackBar;
   [STAThread]
   static void Main() {
       Application.EnableVisualStyles();
       Application.SetCompatibleTextRenderingDefault(false);
       Application.Run(new Form1());
   }

}

</source>