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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace EfwControls.CustomControl
{
/// <summary>
/// 前景或背景
/// </summary>
public enum ForeOrBack
{
Fore,
Back
}
/// <summary>
/// 方向
/// </summary>
public enum Direction
{
LeftToRight,
TopToButtom,
}
public partial class DataGrid : DevComponents.DotNetBar.Controls.DataGridViewX
{
/// <summary>
/// 要画的线的信息列表
/// </summary>
private List<DataGridViewDrawLineInfo> lines;
/// <summary>
/// 是否允许点击ColumnHeader排序
/// </summary>
private bool allowSortWhenClickColumnHeader;
[Description("获取或设置是否允许点击ColumnHeader排序")]
public bool AllowSortWhenClickColumnHeader
{
get
{
return allowSortWhenClickColumnHeader;
}
set
{
allowSortWhenClickColumnHeader = value;
if (this.Columns != null)
{
for (int i = 0; i < this.Columns.Count; i++)
{
if (value == false)
this.Columns[i].SortMode = DataGridViewColumnSortMode.NotSortable;
else
this.Columns[i].SortMode = DataGridViewColumnSortMode.Automatic;
}
}
}
}
private bool _SeqVisible = true;
[Description("获取或设置是否显示序号")]
public bool SeqVisible
{
get { return _SeqVisible; }
set
{
_SeqVisible = value;
this.RowHeadersVisible = _SeqVisible;
}
}
public DataGrid()
{
InitializeComponent();
this.BackgroundColor = System.Drawing.Color.FromArgb(((int)(((byte)(227)))), ((int)(((byte)(239)))), ((int)(((byte)(255)))));
this.GridColor = System.Drawing.Color.FromArgb(((int)(((byte)(227)))), ((int)(((byte)(239)))), ((int)(((byte)(255)))));
this.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.EnableResizing;
this.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
this.BorderStyle = BorderStyle.Fixed3D;
this.AutoGenerateColumns = false;
this.RowHeadersWidth = 25;
this.AllowUserToResizeRows = false;
this.HighlightSelectedColumnHeaders = false;
this.SelectAllSignVisible = false;
System.Windows.Forms.DataGridViewCellStyle cellstyle = new System.Windows.Forms.DataGridViewCellStyle();
cellstyle.BackColor = System.Drawing.Color.AliceBlue;
this.AlternatingRowsDefaultCellStyle = cellstyle;
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (lines != null)
{
foreach (DataGridViewDrawLineInfo line in lines)
{
float lineWidth = line.Width;
if (lineWidth == 0)
lineWidth = 1F;
Color lineColor = line.Color;
if (lineColor.IsEmpty)
lineColor = this.DefaultCellStyle.ForeColor;
if (line.DrawDirection == Direction.TopToButtom)
{
#region 上到下的线
Rectangle startRect = new Rectangle();
Rectangle endRect = new Rectangle();
try
{
startRect = this.GetCellDisplayRectangle(line.DrawLineOfRowColumnIndex, line.StartIndexOfRowColumn, true);
endRect = this.GetCellDisplayRectangle(line.DrawLineOfRowColumnIndex, line.EndIndexOfRowColumn, true);
}
catch
{
throw new Exception("索引超出数组界限，原因可能：要绘制的线条的目标行或列已经被移除！");
}
Point ptStart = new Point(startRect.Left + startRect.Width / 2, startRect.Top + startRect.Height / 2);
Point ptEnd = new Point(endRect.Left + endRect.Width / 2, endRect.Bottom - endRect.Height / 2);
Point ptStart_1 = new Point(ptStart.X + this.Columns[line.DrawLineOfRowColumnIndex].Width / 2, ptStart.Y);
Point ptEnd_1 = new Point(ptEnd.X + this.Columns[line.DrawLineOfRowColumnIndex].Width / 2, ptEnd.Y);
if (ptStart.X == 0 && ptStart.Y == 0 && ptEnd.X == 0 && ptEnd.Y == 0)
continue;
if (ptStart.X == 0 && ptStart.Y == 0)
{
ptStart.X = ptEnd.X;
ptStart.Y = this.ColumnHeadersHeight;
ptStart_1.X = 0;
ptStart_1.Y = 0;
}
if (ptEnd.X == 0 && ptEnd.Y == 0)
{
ptEnd.X = ptStart.X;
ptEnd.Y = this.Height;
ptEnd_1.X = 0;
ptEnd_1.Y = 0;
}
Pen pen = new Pen(lineColor, lineWidth);
//开始端的横线
if (ptStart_1.X != 0 && ptStart_1.Y != 0)
e.Graphics.DrawLine(pen, ptStart, ptStart_1);
//竖线主体
e.Graphics.DrawLine(pen, ptStart, ptEnd);
//结束端的横线
if (ptEnd_1.X != 0 && ptEnd.Y != 0)
e.Graphics.DrawLine(pen, ptEnd, ptEnd_1);
#endregion
}
else
{
#region 左到右
Rectangle startRect = new Rectangle();
Rectangle endRect = new Rectangle();
try
{
startRect = this.GetCellDisplayRectangle(line.StartIndexOfRowColumn, line.DrawLineOfRowColumnIndex, true);
endRect = this.GetCellDisplayRectangle(line.EndIndexOfRowColumn, line.DrawLineOfRowColumnIndex, true);
}
catch
{
throw new Exception("索引超出数组界限，原因可能：要绘制的线条的目标行或列已经被移除！");
}
Point ptStart = new Point(startRect.Left, startRect.Top + startRect.Height / 2);
Point ptEnd = new Point(endRect.Left + endRect.Width, endRect.Top + endRect.Height / 2);
if (ptStart.X == 0 && ptStart.Y == 0 && ptEnd.X == 0 && ptEnd.Y == 0)
continue;
if (ptStart.X == 0 && ptStart.Y == 0)
{
ptStart.X = ptStart.X = this.RowHeadersWidth;
}
if (ptEnd.X == 0 && ptEnd.Y == 0)
{
ptEnd.X = this.Width;
}
Pen pen = new Pen(lineColor, lineWidth);
e.Graphics.DrawLine(pen, ptStart, ptEnd);
#endregion
}
}
}
}
protected override void OnRowPostPaint(DataGridViewRowPostPaintEventArgs e)
{
if (RowHeadersVisible)
{
System.Drawing.Rectangle rectangle = new System.Drawing.Rectangle(e.RowBounds.Location.X, e.RowBounds.Location.Y, RowHeadersWidth - 4, e.RowBounds.Height);
System.Windows.Forms.TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(),
RowHeadersDefaultCellStyle.Font, rectangle, RowHeadersDefaultCellStyle.ForeColor, System.Windows.Forms.TextFormatFlags.VerticalCenter | System.Windows.Forms.TextFormatFlags.HorizontalCenter);
}
base.OnRowPostPaint(e);
}
protected override void OnColumnAdded(DataGridViewColumnEventArgs e)
{
if (allowSortWhenClickColumnHeader)
e.Column.SortMode = DataGridViewColumnSortMode.Automatic;
else
e.Column.SortMode = DataGridViewColumnSortMode.NotSortable;
base.OnColumnAdded(e);
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
HitTestInfo htInfo = this.HitTest(e.X, e.Y);
if (htInfo.Type == DataGridViewHitTestType.Cell)
{
if (htInfo.ColumnIndex != -1 && htInfo.RowIndex != -1)
this.CurrentCell = this[htInfo.ColumnIndex, htInfo.RowIndex];
}
else if (htInfo.Type == DataGridViewHitTestType.ColumnHeader)
{
if (this.Rows.Count > 0)
{
int rowIndex = 0;
while (true)
{
if (this.Rows[rowIndex].Visible)
break;
else
rowIndex++;
}
this.CurrentCell = this[htInfo.ColumnIndex, rowIndex];
}
}
else if (htInfo.Type == DataGridViewHitTestType.RowHeader)
{
int columnIndex = 0;
while (true)
{
if (this.Columns[columnIndex].Visible)
break;
else
columnIndex++;
}
this.CurrentCell = this[columnIndex, htInfo.RowIndex];
}
}
/// <summary>
/// 在指定的位置划线
/// </summary>
/// <param name="StartIndex">开始行或列</param>
/// <param name="EndIndex">结束行或列</param>
/// <param name="RowOrColumnIndex">行或列</param>
/// <param name="direct">方向</param>
public void DrawLines(List<DataGridViewDrawLineInfo> Lines)
{
lines = Lines;
this.InvokePaint(this, new PaintEventArgs(this.CreateGraphics(), new Rectangle(0, 0, this.Width, this.Height)));
}
/// <summary>
/// 增加一个线条对象
/// </summary>
/// <param name="Line"></param>
public void AddLine(DataGridViewDrawLineInfo Line)
{
if (lines == null)
lines = new List<DataGridViewDrawLineInfo>();
lines.Add(Line);
this.InvokePaint(this, new PaintEventArgs(this.CreateGraphics(), new Rectangle(0, 0, this.Width, this.Height)));
}
/// <summary>
/// 移除一个线条对象
/// </summary>
/// <param name="Line"></param>
public void RemoveLine(DataGridViewDrawLineInfo Line)
{
if (lines != null)
{
DataGridViewDrawLineInfo needRemoveLine = null;
foreach (DataGridViewDrawLineInfo line in lines)
{
if (line.StartIndexOfRowColumn == Line.StartIndexOfRowColumn && line.EndIndexOfRowColumn == Line.EndIndexOfRowColumn
&& line.DrawLineOfRowColumnIndex == Line.DrawLineOfRowColumnIndex && line.DrawDirection == Line.DrawDirection)
{
needRemoveLine = line;
break;
}
}
if (needRemoveLine != null)
{
lines.Remove(needRemoveLine);
this.InvokePaint(this, new PaintEventArgs(this.CreateGraphics(), new Rectangle(0, 0, this.Width, this.Height)));
}
}
}
/// <summary>
/// 清除所有线条
/// </summary>
public void ClearLines()
{
lines = null;
this.InvokePaint(this, new PaintEventArgs(this.CreateGraphics(), new Rectangle(0, 0, this.Width, this.Height)));
}
/// <summary>
/// 设置行颜色
/// </summary>
/// <param name="forceColor">前景色</param>
/// <param name="BackColor">背景色</param>
public void SetRowColor(int RowIndex, Color foreColor, Color backColor)
{
for (int ColIndex = 0; ColIndex < this.Columns.Count; ColIndex++)
{
//this.Rows[RowIndex].DefaultCellStyle
this[ColIndex, RowIndex].Style.ForeColor = foreColor;
this[ColIndex, RowIndex].Style.BackColor = backColor;
}
}
/// <summary>
/// 设置行颜色
/// </summary>
/// <param name="forceColor">前景色或者背景色</param>
/// <param name="forceColor">指示是否是前景色</param>
public void SetRowColor(int RowIndex, Color color, bool IsforceColor)
{
for (int ColIndex = 0; ColIndex < this.Columns.Count; ColIndex++)
{
if (IsforceColor)
this[ColIndex, RowIndex].Style.ForeColor = color;
else
this[ColIndex, RowIndex].Style.BackColor = color;
}
}
/// <summary>
/// 设置行颜色
/// </summary>
/// <param name="forceColor">前景色</param>
/// <param name="BackColor">背景色</param>
public void SetRowColor(int RowIndex, Color color, ForeOrBack foreOrBack)
{
for (int ColIndex = 0; ColIndex < this.Columns.Count; ColIndex++)
{
if (foreOrBack == ForeOrBack.Fore)
this[ColIndex, RowIndex].Style.ForeColor = color;
else
this[ColIndex, RowIndex].Style.BackColor = color;
}
}
}
/// <summary>
/// 网格画线所需的信息
/// </summary>
public class DataGridViewDrawLineInfo
{
/// <summary>
/// 待画线的开始行（列）的索引
/// </summary>
private int startIndexOfRowColumn;
/// <summary>
/// 带画线的结束行（列）的索引
/// </summary>
private int endIndexOfRowColumn;
/// <summary>
/// 需要画线的行（列）索引
/// </summary>
private int drawLineOfRowColumnIndex;
/// <summary>
/// 画线的方向（自左到右 或者 自上到下）
/// </summary>
private Direction drawDirection;
/// <summary>
/// 线条编号
/// </summary>
private int index;
/// <summary>
/// 线条颜色
/// </summary>
private Color color;
/// <summary>
/// 线条宽度
/// </summary>
private float width;
/// <summary>
/// 待画线的开始行（列）的索引
/// </summary>
public int StartIndexOfRowColumn
{
get
{
return startIndexOfRowColumn;
}
set
{
startIndexOfRowColumn = value;
}
}
/// <summary>
/// 带画线的结束行（列）的索引
/// </summary>
public int EndIndexOfRowColumn
{
get
{
return endIndexOfRowColumn;
}
set
{
endIndexOfRowColumn = value;
}
}
/// <summary>
/// 需要画线的行（列）索引
/// </summary>
public int DrawLineOfRowColumnIndex
{
get
{
return drawLineOfRowColumnIndex;
}
set
{
drawLineOfRowColumnIndex = value;
}
}
/// <summary>
/// 画线的方向（自左到右 或者 自上到下）
/// </summary>
public Direction DrawDirection
{
get
{
return drawDirection;
}
set
{
drawDirection = value;
}
}
/// <summary>
/// 线条编号
/// </summary>
public int Index
{
get
{
return index;
}
}
/// <summary>
/// 线条颜色
/// </summary>
public Color Color
{
get
{
return color;
}
set
{
color = value;
}
}
/// <summary>
/// 线条宽度
/// </summary>
public float Width
{
get
{
return width;
}
set
{
width = value;
}
}
}
}
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原文地址：http://www.cnblogs.com/HelloWenYuan/p/5693513.html
