技术总结:c# 之winform datagridview操作列

datagridview在winform的框架里面就和html里面的table一样。

但不同的是,原生的datagridview里面并没有操作列这个概念,默认的列类型 有下拉框、文本、按钮、图片、链接这几类,如果需要其他的样式还需要重新写。

其实大部分需求都是如图的效果,当然你使用了别的组件【不是官方自带】,可能实现如图的效果很简单

下面讲讲如图==》操作列 有多个按钮的不同实现方式

1.1 方式一

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms; namespace chao.net{    public partial class FormTest2 : Form    {        public FormTest2()        {            InitializeComponent();        }         private void toolStripLabel1_Click(object sender, EventArgs e)        {         }         private void FormTest2_Load(object sender, EventArgs e)        {            this.dataGridView1.AutoGenerateColumns = false;;            this.dataGridView1.CellMouseClick += dataGridView1_CellMouseClick;            this.dataGridView1.CellPainting += dataGridView1_CellPainting;            this.dataGridView1.Rows.Add();                     }           ///         ///  单元格重绘        ///         ///         ///         private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)        {            if (e.ColumnIndex >= 0 && e.RowIndex >= 0)            {                if (this.dataGridView1.Columns[e.ColumnIndex].HeaderText == "操作")                {                    StringFormat sf = StringFormat.GenericDefault.Clone() as StringFormat;//设置重绘入单元格的字体样式                    sf.FormatFlags = StringFormatFlags.DisplayFormatControl;                    sf.Alignment = StringAlignment.Center;                    sf.LineAlignment = StringAlignment.Center;                    sf.Trimming = StringTrimming.EllipsisCharacter;                     //e.PaintContent                     e.PaintBackground(e.CellBounds, false);//重绘边框                     //设置要写入字体的大小                    System.Drawing.Font myFont = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Underline, System.Drawing.GraphicsUnit.Point, ((byte)(134)));                    //myFon                     SizeF sizeDel = e.Graphics.MeasureString("删除", myFont);                     SizeF sizeMod = e.Graphics.MeasureString("修改", myFont);                    SizeF sizeLook = e.Graphics.MeasureString("查看", myFont);                     float fDel = sizeDel.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width); //                    float fMod = sizeMod.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);                    float fLook = sizeLook.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);                     //设置每个“按钮的边界”                    RectangleF rectDel = new RectangleF(e.CellBounds.Left, e.CellBounds.Top, e.CellBounds.Width * fDel, e.CellBounds.Height);                     RectangleF rectMod = new RectangleF(rectDel.Right, e.CellBounds.Top, e.CellBounds.Width * fMod, e.CellBounds.Height);                     RectangleF rectLook = new RectangleF(rectMod.Right, e.CellBounds.Top, e.CellBounds.Width * fLook, e.CellBounds.Height);                     e.Graphics.DrawString("删除", myFont, Brushes.Black, rectDel, sf); //绘制“按钮”                    e.Graphics.DrawString("修改", myFont, Brushes.Black, rectMod, sf);                    e.Graphics.DrawString("查看", myFont, Brushes.Black, rectLook, sf);                     e.Handled = true;                }            }         }          ///         /// 鼠标点击事件        ///         ///         ///         private void dataGridView1_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)        {            if (e.ColumnIndex >= 0 && e.RowIndex >= 0)            {                Point curPosition = e.Location;//当前鼠标在当前单元格中的坐标                if (this.dataGridView1.Columns[e.ColumnIndex].HeaderText == "操作")                {                    //this.dataGridView1.Columns[e.ColumnIndex].Add                     Graphics g = this.dataGridView1.CreateGraphics();                    System.Drawing.Font myFont = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Underline, System.Drawing.GraphicsUnit.Point, ((byte)(134)));                    SizeF sizeDel = g.MeasureString("删除", myFont);                    SizeF sizeMod = g.MeasureString("修改", myFont);                    SizeF sizeLook = g.MeasureString("查看", myFont);                    float fDel = sizeDel.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);                    float fMod = sizeMod.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);                    float fLook = sizeLook.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);                     Rectangle rectTotal = new Rectangle(0, 0, this.dataGridView1.Columns[e.ColumnIndex].Width, this.dataGridView1.Rows[e.RowIndex].Height);                    RectangleF rectDel = new RectangleF(rectTotal.Left, rectTotal.Top, rectTotal.Width * fDel, rectTotal.Height);                    RectangleF rectMod = new RectangleF(rectDel.Right, rectTotal.Top, rectTotal.Width * fMod, rectTotal.Height);                    RectangleF rectLook = new RectangleF(rectMod.Right, rectTotal.Top, rectTotal.Width * fLook, rectTotal.Height);                    //判断当前鼠标在哪个“按钮”范围内                    if (rectDel.Contains(curPosition))//删除                        MessageBox.Show("点击删除按钮");                    else if (rectMod.Contains(curPosition))//修改                        MessageBox.Show("点击修改按钮");                    else if (rectLook.Contains(curPosition))//查看                        MessageBox.Show("点击查看按钮");                }            }         }         private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)        {         }    }}

主要方法是:dataGridView1_CellPainting  就是重新绘制单元格。代码在FormTest2.cs里面,进入链接在最下面。

效果:

1.2 方式二

    使用右键菜单==》也可套用点击行里面的按钮显示菜单。【学会举一反三就行】

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms; namespace chao.net{    public partial class FormTest3 : Form    {        public FormTest3()        {            InitializeComponent();        }         private void FormTest3_Load(object sender, EventArgs e)        {            this.dataGridView1.AutoGenerateColumns = false; ;            this.dataGridView1.MouseClick += dataGridView1_MouseClick;            this.dataGridView1.Rows.Add();        }           ///         /// stripItem0点击事件-删除选中行        ///         private void stripItems0_Click(object sender, EventArgs e)        {            MessageBox.Show("-删除选中行--");        }         private void dataGridView1_MouseClick(object sender, MouseEventArgs e)        {            ContextMenuStrip strip = new ContextMenuStrip();            strip.ShowImageMargin = false;//设置右击菜单属性            strip.Items.Add("删除选定行");            strip.Items.Add("添加行");             strip.Items[0].Click += stripItems0_Click;//弹出菜单第一项点击事件            strip.Items[1].Click += stripItems1_Click;//弹出菜单第二项点击事件             if (e.Button == MouseButtons.Right)//右键点击            {                strip.Show(this.dataGridView1, e.Location);//弹出菜单            }        }         ///         /// 弹出菜单第二项点击事件        ///         private void stripItems1_Click(object sender, EventArgs e)        {            MessageBox.Show("-添加行-");        }     }}

解释:主要方法是:dataGridView1_MouseClick,这边判断是否右键点击【操作请在datagridview里面右键点击】。代码在FormTest3.cs里面,进入链接在最下面。【其实这种思维更适合客户端,网页和桌面应用还是有区别的】

效果:

1.3 方式三

    是我参考网上一些固有样式,写出的一个动态的操作列,可以适合权限管理【按钮】。推荐使用。当然可能有些小问题,暂时我还没发现。这种样式和后端管理的操作列类似。如果按钮超出列的宽度,请设置合适的该列的宽度。

 using chao.net.UIL;using chao.net.UIL.UserControls;using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing; using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms; namespace chao.net{    public partial class FormTest : Form    {                   public FormTest()        {            InitializeComponent();        }         private void FormTest_Load(object sender, EventArgs e)        {                   this.dataGridView1.AutoGenerateColumns = false;              DataGridViewActionButtonColumn dataGridViewColumn = new DataGridViewActionButtonColumn();            dataGridViewColumn.Width = 240;            dataGridViewColumn.HeaderText = "操作列2";            dataGridViewColumn.Resizable = DataGridViewTriState.False;            this.dataGridView1.Columns.Add(dataGridViewColumn); /*            DataGridViewDetailButtonColumn buttonColumn = new DataGridViewDetailButtonColumn();            buttonColumn.HeaderText = "操作列3";            this.dataGridView1.Columns.Add(buttonColumn);*/             this.dataGridView1.Rows.Add();           /* this.dataGridView1.RowHeadersVisible = true;            this.dataGridView1.ColumnHeadersVisible = true;*/         }             private void dataGridView1_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)        {             if (this.dataGridView1.Columns[e.ColumnIndex].HeaderText == "操作列2")            {                DataGridViewActionButtonColumn dataGridViewColumn = (DataGridViewActionButtonColumn)this.dataGridView1.Columns[e.ColumnIndex];                 //DataGridViewActionButtonCell dataGridViewActionButtonCell = (DataGridViewActionButtonCell)dataGridViewColumn.CellTemplate;                 List buttonList = dataGridViewColumn.ButtonList;                 foreach(ActionButton act in buttonList){                    if (act.MouseOnButton)//此时鼠标悬浮在上面                    {                        Console.WriteLine("点击了:" + act.Name);                        //MessageBox.Show("点击了:"+act.Name);                    }                }                       }         }      }}

解释:主要方法是:FormTest_Load 和 dataGridView1_MouseClick,FormTest_Load 主要是自定义单元格,dataGridView1_MouseClick是点击判断点击的按钮区域进而做业务处,需要使用自定义的列DataGridViewActionButtonColumn和自定义的单元格DataGridViewActionButtonCell。代码在FormTest.cs里面,进入链接在最下面。【其实这种思维更适合客户端,网页和桌面应用还是有区别的】

效果:

源代码:https://gitee.com/ten-ken/csharp-demo-code/tree/master/chao.net

[暂时不对外开放,等过段时间]

本文来源于:宋文超super,专属平台有csdn、思否(SegmentFault)、 简书、 开源中国(oschina),转载请注明出处。

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