datagridtextboxcolumn.cs

一个用vs2003编写的客户工资管理系统客户端程序/一个用vs2003编写的客户工资管理系统客户端程序

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Threading;

namespace GzglClient.ColumnStyles
{
	public class DataGridTextBoxColumn : System.Windows.Forms.DataGridTextBoxColumn
	{
		private bool m_IsRedIfOverDue = false;

		public DataGridTextBoxColumn(string format, string headerText, string mappingName, int width)
		{
			base.Format = format;
			base.HeaderText = headerText;
			base.MappingName = mappingName;
			base.Width = width;
		}

		public DataGridTextBoxColumn(string format, string headerText, string mappingName,
			int width, bool isRedIfOverDue)
		{
			base.Format = format;
			base.HeaderText = headerText;
			base.MappingName = mappingName;
			base.Width = width;
			m_IsRedIfOverDue = isRedIfOverDue;
		}

		protected override void Edit(System.Windows.Forms.CurrencyManager source, int rowNum, 
			System.Drawing.Rectangle bounds, bool isReadOnly, string instantText, bool cellIsVisible)
		{
			// Do Nothing
			// This is a ReadOnly DataGrid
		}

		protected override void Paint(System.Drawing.Graphics g, System.Drawing.Rectangle bounds, 
			System.Windows.Forms.CurrencyManager source, int rowNum, System.Drawing.Brush backBrush, 
			System.Drawing.Brush foreBrush, bool alignToRight)
		{
			object bVal = GetColumnValueAtRow(source, rowNum);

			if (this.Format == "d")
			{
				try
				{
					// globalize for german
					if (Thread.CurrentThread.CurrentUICulture.TwoLetterISOLanguageName == "de")
						bVal = String.Format("{0:d}", Convert.ToDateTime(bVal).ToString("dd/MM/yy"));
					else
						bVal = String.Format("{0:d}", Convert.ToDateTime(bVal));
				}
				catch
				{
					// ignore an invalid cast
				}
			}

			// if the current row is this row, draw the selection back color
			if (this.DataGridTableStyle.DataGrid.CurrentRowIndex == rowNum)
			{
				g.FillRectangle(new SolidBrush(this.DataGridTableStyle.SelectionBackColor), bounds);
				g.DrawString(Convert.ToString(bVal), this.DataGridTableStyle.DataGrid.Font,
					new SolidBrush(this.DataGridTableStyle.SelectionForeColor), bounds.X + 2, bounds.Y + 2);
			}
			else
			{
				g.FillRectangle(backBrush, bounds);

				if (m_IsRedIfOverDue)
				{
					try
					{
						if (Convert.ToDateTime(bVal).Date < DateTime.Now.Date)
							g.DrawString(Convert.ToString(bVal), this.DataGridTableStyle.DataGrid.Font,
								new SolidBrush(Color.Red), bounds.X + 2, bounds.Y + 2);
						else
							g.DrawString(Convert.ToString(bVal), this.DataGridTableStyle.DataGrid.Font, foreBrush,
								bounds.X + 2, bounds.Y + 2);
					}
					catch
					{
						g.DrawString(Convert.ToString(bVal), this.DataGridTableStyle.DataGrid.Font, foreBrush,
							bounds.X + 2, bounds.Y + 2);
					}
				}
				else
				{
					g.DrawString(Convert.ToString(bVal), this.DataGridTableStyle.DataGrid.Font, foreBrush,
						bounds.X + 2, bounds.Y + 2);
				}		
			}
		}
	}
}