转---《C#画线控件的开发应用实例解析》

 C#画线控件的应用实例介绍之前我们要明白在C#中没有画线的控件，这里写了一个，大家分享。共有两个控件分别是画横线和画竖线的，关于怎么画斜线我还没没有，有兴趣的可以做一个大家分享。

    C#画线控件之横线

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

namespace Jiashi.WinControls
{
 ///
 /// LineX 画横线控件
 ///
 public class LineX : System.Windows.Forms.UserControl
 {

#region 属性定义
private System.Drawing.Color lineColor;
private int lineWidth;
///
/// 线的颜色属性
///
public System.Drawing.Color LineColor
{
 set
 {
this.lineColor=value;
System.Windows.Forms.PaintEventArgs ep=
new PaintEventArgs(this.CreateGraphics(),
this.ClientRectangle);
this.LineX_Paint(this,ep);
 }
 get{return this.lineColor;}
}
///
/// 线的粗细
///
public int LineWidth
{
 set
 {
this.lineWidth=value;
System.Windows.Forms.PaintEventArgs ep=
new PaintEventArgs(this.CreateGraphics(),
this.ClientRectangle);
this.LineX_Paint(this,ep);
 }
 get{return this.lineWidth;}
}
#endregion
private System.ComponentModel.Container components = null;

///
/// 构造函数初始颜色和线粗细
///
public LineX()
{
 InitializeComponent();
 this.lineColor=this.ForeColor;
 this.lineWidth=1;

}

///
/// 清理所有正在使用的资源。
///
protected override void Dispose( bool disposing )
{
 if( disposing )
 {
if(components != null)
{
 components.Dispose();
}
 }
 base.Dispose( disposing );
}

#region 组件设计器生成的代码
///
/// 设计器支持所需的方法 - 不要使用代码编辑器
/// 修改此方法的内容。
///
private void InitializeComponent()
{
 //
 // LineX
 //
 this.Name = "LineX";
 this.Resize += new System.EventHandler(this.LineX_Resize);
 this.Paint +=
new System.Windows.Forms.PaintEventHandler(this.LineX_Paint);

}
#endregion

private void LineX_Paint(object sender,
 System.Windows.Forms.PaintEventArgs e)
{
 Graphics g=e.Graphics;
 Pen myPen = new Pen(this.lineColor);
 myPen.Width=this.lineWidth*2;
 this.Height=this.LineWidth;
 g.DrawLine(myPen,0,0,e.ClipRectangle.Right,0);
}

private void LineX_Resize(object sender, System.EventArgs e)
{
 this.Height=this.lineWidth;
}
 }
}

    C#画线控件之竖线

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

namespace Jiashi.WinControls
{
 ///
 /// LineY 画竖线控件
 ///
 public class LineY : System.Windows.Forms.UserControl
 {

#region 属性定义
private System.Drawing.Color lineColor;
private int lineWidth;
///
/// 线的颜色属性
///
public System.Drawing.Color LineColor
{
 set
 {
this.lineColor=value;
System.Windows.Forms.PaintEventArgs ep=
new PaintEventArgs(this.CreateGraphics(),
this.ClientRectangle);
this.LineY_Paint(this,ep);
 }
 get{return this.lineColor;}
}
///
/// 线的粗细
///
public int LineWidth
{
 set
 {
this.lineWidth=value;
System.Windows.Forms.PaintEventArgs ep=
new PaintEventArgs(this.CreateGraphics(),
this.ClientRectangle);
this.LineY_Paint(this,ep);
 }
 get{return this.lineWidth;}
}
#endregion
private System.ComponentModel.Container components = null;

///
/// 构造函数初始颜色和线粗细
///
public LineY()
{
 InitializeComponent();
 this.lineColor=this.ForeColor;
 this.lineWidth=1;

}

///
/// 清理所有正在使用的资源。
///
protected override void Dispose( bool disposing )
{
 if( disposing )
 {
if(components != null)
{
 components.Dispose();
}
 }
 base.Dispose( disposing );
}

#region 组件设计器生成的代码
///
/// 设计器支持所需的方法 - 不要使用代码编辑器
/// 修改此方法的内容。
///
private void InitializeComponent()
{
 //
 // LineY
 //
 this.Name = "LineY";
 this.Resize +=
new System.EventHandler(this.LineY_Resize);
 this.Paint +=
new System.Windows.Forms.PaintEventHandler(this.LineY_Paint);

}
#endregion

private void LineY_Paint(
object sender, System.Windows.Forms.PaintEventArgs e)
{
 Graphics g=e.Graphics;
 Pen myPen = new Pen(this.lineColor);
 myPen.Width=this.lineWidth*2;
 this.Width=this.LineWidth;
 g.DrawLine(myPen,0,0,0,e.ClipRectangle.Bottom);
}

private void LineY_Resize(
object sender, System.EventArgs e)
{
 this.Width=this.lineWidth;
}
 }
}

    C#画线控件的开发就向你介绍到这里，希望对你了解和学习C#画线控件有所帮助