You would set the AutoScrollPosition for this.
After my signature is a simple application that demonstrates the idea.
--
Bob Powell [MVP]
Visual C#, System.Drawing
Ramuseco Limited .NET consulting
http://www.ramuseco.com
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using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace CenterScrollPanel
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.Button button1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (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.panel1 = new System.Windows.Forms.Panel();
this.button1 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// panel1
//
this.panel1.AutoScroll = true;
this.panel1.AutoScrollMinSize = new System.Drawing.Size(1024, 768);
this.panel1.Location = new System.Drawing.Point(8, 8);
this.panel1.Name = "panel1";
this.panel1.Size = new System.Drawing.Size(272, 208);
this.panel1.TabIndex = 0;
this.panel1.Paint += new
System.Windows.Forms.PaintEventHandler(this.panel1 _Paint);
//
// button1
//
this.button1.Location = new System.Drawing.Point(16, 232);
this.button1.Name = "button1";
this.button1.TabIndex = 1;
this.button1.Text = "Recenter";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.Add(this.button1);
this.Controls.Add(this.panel1);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void panel1_Paint(object sender, System.Windows.Forms.PaintEventArgs
e)
{
e.Graphics.Transform=new
Matrix(1,0,0,1,this.panel1.AutoScrollPosition.X,th is.panel1.AutoScrollPosition.Y);
Pen p=new Pen(Color.Red,3);
e.Graphics.DrawLine(p,512,374,512,394);
e.Graphics.DrawLine(p,502,384,522,384);
p.Dispose();
}
private void button1_Click(object sender, System.EventArgs e)
{
this.panel1.AutoScrollPosition=new Point(
this.panel1.AutoScrollMinSize.Width/2-this.panel1.ClientRectangle.Width/2,
this.panel1.AutoScrollMinSize.Height/2-this.panel1.ClientSize.Height/2);
}
}
}
"Sharon" <Sh*****@newsgroups.nospam> wrote in message
news:0B**********************************@microsof t.com...
I'm using the Panel control that contains a PictureBox control (for
implementing the http://www.codeproject.com/cs/miscctrl/PictureBox.asp).
The Panel is set to AutoScroll = true.
I wish to scroll the appearing vertical and horizontal scrolls bars of the
Panel to the middle of their scrolling range so the contained PictureBox
will
be centered inside the Panel.
But I could not find a way to get the scrolls bars for doing that.
Can anybody tell me how can I do that?
---------
Thanks
Sharon
