Scroll event : ScrollBar « GUI Windows Form « C# / C Sharp

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C# / C Sharp » GUI Windows Form » ScrollBarScreenshots 
Scroll event
 

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

public class Form1 : System.Windows.Forms.Form {
    private System.Windows.Forms.TextBox textBox1;
    private System.Windows.Forms.VScrollBar vScrollBar1;
    int counter = 0;
    private System.Windows.Forms.Label label1;
    public Form1() {
        this.textBox1 = new System.Windows.Forms.TextBox();
        this.vScrollBar1 = new System.Windows.Forms.VScrollBar();
        this.label1 = new System.Windows.Forms.Label();
        this.SuspendLayout();

        this.textBox1.Font = new System.Drawing.Font("Microsoft Sans Serif"12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
        this.textBox1.ForeColor = System.Drawing.Color.Transparent;
        this.textBox1.Location = new System.Drawing.Point(2456);
        this.textBox1.Multiline = true;
        this.textBox1.ReadOnly = true;
        this.textBox1.Size = new System.Drawing.Size(14432);
        this.textBox1.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;

        this.vScrollBar1.Location = new System.Drawing.Point(16856);
        this.vScrollBar1.Size = new System.Drawing.Size(1632);
        this.vScrollBar1.Scroll += new System.Windows.Forms.ScrollEventHandler(this.vScrollBar1_Scroll);

        this.label1.Location = new System.Drawing.Point(816);
        this.label1.Size = new System.Drawing.Size(19216);
        this.label1.Text = "Numeric Scolling using VScroll Bars";

        this.AutoScaleBaseSize = new System.Drawing.Size(513);
        this.ClientSize = new System.Drawing.Size(208109);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                      this.label1,
                                      this.vScrollBar1,
                                      this.textBox1});
        this.Text = "Numeric Scroll";
        this.Load += new System.EventHandler(this.Form1_Load);
        this.ResumeLayout(false);

    }
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }

    private void textBox1_TextChanged(object sender, System.EventArgs e) {
    }

    private void Form1_Load(object sender, System.EventArgs e) {
        vScrollBar1.Maximum = 100;
        vScrollBar1.Minimum = 0;
        vScrollBar1.SmallChange = 1;

    }

    private void vScrollBar1_Scroll(object sender, System.Windows.Forms.ScrollEventArgs e) {
        if (e.Type == ScrollEventType.Last)
            counter = 100;
        if (e.Type == ScrollEventType.First)
            counter = 0;
        if (e.Type == ScrollEventType.SmallDecrement)
            counter--;
        if (e.Type == ScrollEventType.SmallIncrement) {
            counter++;
        
        if (e.Type == ScrollEventType.LargeDecrement)
            counter -= 5;
        if (e.Type == ScrollEventType.LargeIncrement) {
            counter += 5;
        
        if (e.Type == ScrollEventType.First)
            counter = 0;
        if (e.Type == ScrollEventType.Last)
            counter = 100;

        Console.WriteLine(e.NewValue + "\n");
        if (counter > 100counter = 100;
        if (counter < 0counter = 0;

        Console.WriteLine(counter.ToString());
    }
}

 
Related examples in the same category
1.Use ScrollBar to control the picture sizeUse ScrollBar to control the picture size
2.ScrollBars Demo ScrollBars Demo
3.VScrollBar ValueChanged
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