DataGrid with Sizable Multiline Column Headers

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

namespace SizableColumnHeaderDataGridSample
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{


	#region Not important sample stuff

		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button button1;
		private ThreeRiversTechnologies.SizableColumnHeaderDataGrid sizableColumnHeaderDataGrid1;

		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

		}

		/// <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.textBox1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.button1 = new System.Windows.Forms.Button();
			this.sizableColumnHeaderDataGrid1 = new ThreeRiversTechnologies.SizableColumnHeaderDataGrid();
			((System.ComponentModel.ISupportInitialize)(this.sizableColumnHeaderDataGrid1)).BeginInit();
			this.SuspendLayout();
			// 
			// textBox1
			// 
			this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
			this.textBox1.Location = new System.Drawing.Point(136, 264);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(56, 20);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "";
			// 
			// label1
			// 
			this.label1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
			this.label1.Location = new System.Drawing.Point(16, 264);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(128, 23);
			this.label1.TabIndex = 2;
			this.label1.Text = "Column Header Height:";
			this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			// 
			// button1
			// 
			this.button1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
			this.button1.Location = new System.Drawing.Point(200, 264);
			this.button1.Name = "button1";
			this.button1.TabIndex = 3;
			this.button1.Text = "Apply";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// sizableColumnHeaderDataGrid1
			// 
			this.sizableColumnHeaderDataGrid1.CaptionVisible = false;
			this.sizableColumnHeaderDataGrid1.ColumnHeaderHeight = 39;
			this.sizableColumnHeaderDataGrid1.DataMember = "";
			this.sizableColumnHeaderDataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.sizableColumnHeaderDataGrid1.Location = new System.Drawing.Point(8, 16);
			this.sizableColumnHeaderDataGrid1.Name = "sizableColumnHeaderDataGrid1";
			this.sizableColumnHeaderDataGrid1.Size = new System.Drawing.Size(344, 240);
			this.sizableColumnHeaderDataGrid1.TabIndex = 4;
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(360, 293);
			this.Controls.Add(this.sizableColumnHeaderDataGrid1);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.label1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.Load += new System.EventHandler(this.Form1_Load);
			((System.ComponentModel.ISupportInitialize)(this.sizableColumnHeaderDataGrid1)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}
	
	#endregion // Not important sample stuff



	#region Sample code
	
		private void Form1_Load(object sender, System.EventArgs e)
		{
			//
			// Build tablestyle
			//
			DataGridTableStyle ts = new DataGridTableStyle();

			DataGridTextBoxColumn col1 = new DataGridTextBoxColumn();
			col1.MappingName = "one";
			col1.HeaderText = "Row Index\nmulitplied\nby 1";
			ts.GridColumnStyles.Add(col1);
			
			DataGridTextBoxColumn col2 = new DataGridTextBoxColumn();
			col2.MappingName = "two";
			col2.HeaderText = "Row Index\nmulitplied\nby 2";
			ts.GridColumnStyles.Add(col2);
			
			DataGridTextBoxColumn col3 = new DataGridTextBoxColumn();
			col3.MappingName = "three";
			col3.HeaderText = "Row Index\nmulitplied\nby 3";
			ts.GridColumnStyles.Add(col3);
			
			sizableColumnHeaderDataGrid1.TableStyles.Clear();
			sizableColumnHeaderDataGrid1.TableStyles.Add(ts);


			//
			// Build sample data
			//
			DataTable dt = new DataTable();
			dt.Columns.Add(new DataColumn("one"));
			dt.Columns.Add(new DataColumn("two"));
			dt.Columns.Add(new DataColumn("three"));
			DataRow row;

			for (Int32 i = 0; i < 100; i++)
			{
				row = dt.NewRow();
				row["one"] = i;
				row["two"] = i * 2;
				row["three"] = i * 3;
				dt.Rows.Add(row);

			}

			
			
			//
			// Bind
			//
			sizableColumnHeaderDataGrid1.DataSource = dt;

			//
			// Show current column header size
			//
			textBox1.Text = sizableColumnHeaderDataGrid1.ColumnHeaderHeight.ToString();

		}

	
		private void button1_Click(object sender, System.EventArgs e)
		{
			//
			// Apply new column header size
			//
			sizableColumnHeaderDataGrid1.ColumnHeaderHeight = Convert.ToInt32(textBox1.Text);

			//
			// Must call invalidate in order to force datagrid to repaint
			//
			sizableColumnHeaderDataGrid1.Invalidate();

		}

	
	#endregion // Sample code



	}
}