定义自己的dataGridView实现鼠标经过时高亮显示的效果
Winfrom继承dataGridView类实现鼠标经过时高亮显示的效果
winform C# 2010-04-11 17:44:16 阅读60 评论0 字号：大中小
在做Winfrom编程时，为什么要建议用自己的控件呢？这样就算有什么东西要增加修改时，也可以做到统一修改和增加，现在本文就介绍一下如何实现继承dataGridView鼠标经过时高亮显示的效果，代码如下
class GridView : System.Windows.Forms.DataGridView
{
#region Andy' Co
#region 属性代码
/// <summary>
/// 进入Cells之前的颜色
/// </summary>
private static System.Drawing.Color _BeforInCellsColor;
/// <summary>
/// 鼠标经过时的高亮颜色
/// </summary>
private static System.Drawing.Color _MouseOverHighColor = System.Drawing.Color.SkyBlue;
[System.ComponentModel.Browsable(true)]
[System.ComponentModel.Description("鼠标经过时的高亮颜色")]
[System.ComponentModel.DefaultValue(typeof(System.Drawing.Color), "SkyBlue")]
[System.ComponentModel.Category("OtherStyle")]
public System.Drawing.Color MouseOverHighColor
{
get { return GridView._MouseOverHighColor; }
set { GridView._MouseOverHighColor = value; }
}
/// <summary>
/// 是否启用鼠标经过时颜色高亮，如启用，SelectionMode也会被设为FullRowSelect
/// </summary>
private bool _UseMouseOverStyle = false;
[System.ComponentModel.Browsable(true)]
[System.ComponentModel.Category("OtherStyle")]
[System.ComponentModel.Description("是否启用鼠标经过时颜色高亮，如启用，SelectionMode也会被设为FullRowSelect")]
[System.ComponentModel.DefaultValue(false)]
public bool UseMouseOverStyle
{
get { return _UseMouseOverStyle; }
set
{
if (value)
this.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
else
this.SelectionMode = DataGridViewSelectionMode.RowHeaderSelect;
_UseMouseOverStyle = value;
}
}
private static Color _BeforCellSelect;
#endregion
#region 重写的方法
protected override void On
{
base.On
if (this.Rows.Count > 0)
{
for (int i = 0; i < this.Rows.Count; i++)
{
this.Rows[i].HeaderCell.Value = (i + 1).ToString();
}
if (this.SelectedRows.Count > 0)
SelectedRows[0].Selected = false;
}
}
protected override void On
{
base.On
if (UseMouseOverStyle)
{
if (e.RowIndex > -1 && e.ColumnIndex > -1)
{
if (!this.Rows[e.RowIndex].Selected)
{
this.Rows[e.RowIndex].DefaultCellStyle.BackColor = _BeforInCellsColor;
}
}
}
}
protected override void On
{
base.On
if (UseMouseOverStyle)
{
if (e.RowIndex > -1 && e.ColumnIndex > -1)
{
if (!this.Rows[e.RowIndex].Selected)
{
_BeforInCellsColor = this.Rows[e.RowIndex].DefaultCellStyle.BackColor;
this.Rows[e.RowIndex].DefaultCellStyle.BackColor = _MouseOverHighColor;
}
}
}
}
protected override void On
{
base.On
this.Rows[e.RowIndex].DefaultCellStyle.BackColor = _BeforCellSelect;
}
protected override void On
{
base.On
_BeforCellSelect = _BeforInCellsColor;
}
#endregion
#endregion
}
记得添加这些引用
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;
using System.Da
using System.Reflection;
完成后生成一下项目，就会在工具栏生成一个组件，
可以直接拉来用了
http://limingloved.blog.163.com/blog/static/132297658201031154416618/
我的应用：
添加一个类MyDataGridView，继承自System.Windows.Forms.DataGridView
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Reflection;
namespace Solution1Test
{
class MyDataGridView:System.Windows.Forms.DataGridView
{
#region Andy' Code
#region 属性代码
/// <summary>
/// 进入Cells之前的颜色
/// </summary>
private static System.Drawing.Color _BeforInCellsColor;
/// <summary>
/// 鼠标经过时的高亮颜色
/// </summary>
private static System.Drawing.Color _MouseOverHighColor = System.Drawing.Color.SkyBlue;
[System.ComponentModel.Browsable(true)]
[System.ComponentModel.Description("鼠标经过时的高亮颜色")]
[System.ComponentModel.DefaultValue(typeof(System.Drawing.Color), "SkyBlue")]
[System.ComponentModel.Category("OtherStyle")]
public System.Drawing.Color MouseOverHighColor
{
get { return MyDataGridView._MouseOverHighColor; }
set { MyDataGridView._MouseOverHighColor = value; }
}
/// <summary>
/// 是否启用鼠标经过时颜色高亮，如启用，SelectionMode也会被设为FullRowSelect
/// </summary>
private bool _UseMouseOverStyle = false;
[System.ComponentModel.Browsable(true)]
[System.ComponentModel.Category("OtherStyle")]
[System.ComponentModel.Description("是否启用鼠标经过时颜色高亮，如启用，SelectionMode也会被设为FullRowSelect")]
[System.ComponentModel.DefaultValue(false)]
public bool UseMouseOverStyle
{
get { return _UseMouseOverStyle; }
set
{
if (value)
this.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
else
this.SelectionMode = DataGridViewSelectionMode.RowHeaderSelect;
_UseMouseOverStyle = value;
}
}
private static Color _BeforCellSelect;
#endregion
#region 重写的方法
protected override void OnDataBindingComplete(DataGridViewBindingCompleteEventArgs e)
{
base.OnDataBindingComplete(e);
if (this.Rows.Count > 0)
{
for (int i = 0; i < this.Rows.Count; i++)
{
this.Rows[i].HeaderCell.Value = (i + 1).ToString();
}
if (this.SelectedRows.Count > 0)
SelectedRows[0].Selected = false;
}
}
protected override void OnCellMouseLeave(DataGridViewCellEventArgs e)
{
base.OnCellMouseLeave(e);
if (UseMouseOverStyle)
{
if (e.RowIndex > -1 && e.ColumnIndex > -1)
{
if (!this.Rows[e.RowIndex].Selected)
{
this.Rows[e.RowIndex].DefaultCellStyle.BackColor = _BeforInCellsColor;
}
}
}
}
protected override void OnCellMouseEnter(DataGridViewCellEventArgs e)
{
base.OnCellMouseEnter(e);
if (UseMouseOverStyle)
{
if (e.RowIndex > -1 && e.ColumnIndex > -1)
{
if (!this.Rows[e.RowIndex].Selected)
{
_BeforInCellsColor = this.Rows[e.RowIndex].DefaultCellStyle.BackColor;
this.Rows[e.RowIndex].DefaultCellStyle.BackColor = _MouseOverHighColor;
}
}
}
}
protected override void OnRowLeave(DataGridViewCellEventArgs e)
{
base.OnRowLeave(e);
this.Rows[e.RowIndex].DefaultCellStyle.BackColor = _BeforCellSelect;
}
protected override void OnCellClick(DataGridViewCellEventArgs e)
{
base.OnCellClick(e);
_BeforCellSelect = _BeforInCellsColor;
}
#endregion
#endregion
}
}
编译后，即可在工具栏的最上方生成自己的控件。
