C# DataGridView 添加Button -转

也不知道是否该应用这个控件,不过也想不出该用其他什么控件,关键是俺比较菜没什么经验。

要求是这样的,用户一次添加一个任务,这个任务有三个选项,其中两个选项是用户动态输入的名称(就象图中bb和dd两列),另一个选项则是一堆数据(就象qq那列),我现在要把每个任务罗列出来,不能用treeview,不能用tabcontrol,不能用xml,最好象个表格一样清晰明朗(疯了!)每个任务对应两个按钮,一个是Run,为了跑任务,一个是Remove,为了移除任务。

 

 

当然最开始选择DataGridView就是为了满足那个“象表格一样清晰明朗”的奇怪需求,一行对应一个任务,其次貌似DataGridView控件在.net 2.0中加入了新的特征如DataGridViewButtonColumn啊,DataGridViewComboBoxColumn之类的东东。研究了一天才发现这两个东东根本派不上用场,首先DataGridViewButtonColumn中的Button跟真的Button根本没得比,既不能添加Button的Text也不好添加Click事件(应该是有方法的但还是很别扭而且也没研究);其次是DataGridViewComboBoxColumn,不仅外观上不能和真正的ComboBox相提并论,而且当你选择了其中的任一item,DataGridView就会新增一行,这跟我们的需求是完全不符合的,毕竟一个选项是不能代表一个任务的。

从网上查了很多资料,呵呵,看到一篇说可以画个控件上去,觉得很有意思。其实我就是这么做的。

(1)首先初始化DataGridView控件。

private   void  Form1_Load( object  sender, EventArgs e)

{

DataGridViewCellStyle columnHeaderStyle 
=   new  DataGridViewCellStyle();

            columnHeaderStyle.BackColor 
=  Color.Beige;

            columnHeaderStyle.Font 
=   new  Font( " Verdana " 10 , FontStyle.Bold);

            dataGridView1.ColumnHeadersDefaultCellStyle 
=  columnHeaderStyle;

            
this .dataGridView1.Columns.Add( " 1 " " bb " );

            
this .dataGridView1.Columns.Add( " 2 " " qq " );

            
this .dataGridView1.Columns.Add( " 3 " " dd " );

            
this .dataGridView1.Columns.Add( " 4 " " aa " );

}

 

(2)单击按钮添加一行,包括单元格和单元格的值,看似内嵌在单元格中的按钮和下拉列表

 

private   void  button4_Click( object  sender, EventArgs e)

{

            DataGridViewRow dr 
=   new  DataGridViewRow();

            
foreach  (DataGridViewColumn c  in   this .dataGridView1.Columns)

            {

                dr.Cells.Add(c.CellTemplate.Clone() 
as  DataGridViewCell);   // 给行添加单元格

            }

dr.Cells[
0 ].Value  =   " 1111 " ;

            dr.Cells[
2 ].Value  =   " 3333 " ;

            
this .dataGridView1.Rows.Add(dr);

            
int  index  =   this .dataGridView1.Rows.Count  -   2 ;

 

            ComboBox com 
=   new  ComboBox();

            com.Name 
=   " Containers "   +  index.ToString(); ;

            com.DropDownStyle 
=  System.Windows.Forms.ComboBoxStyle.DropDownList;

            com.FlatStyle 
=  System.Windows.Forms.FlatStyle.Flat;

            com.Items.AddRange(
new   object [] {

            
" 1 " ,

            
" 2 " ,

            
" 3 " ,

            
" 4 " });

            com.SelectedIndex 
=   0 ;

            
this .dataGridView1.Controls.Add(com);

            
this .dataGridView1.Columns[ 1 ].Width  =  com.Width;

            com.Location 
=   new  System.Drawing.Point((( this .dataGridView1.GetCellDisplayRectangle( 1 , index,  true ).Right)  -  (com.Width)),  this .dataGridView1.GetCellDisplayRectangle( 1 , index,  true ).Y);

 

            Button btn1 
=   new  Button();

            btn1.Name 
=   " btnRun "   +  index.ToString(); ;

            btn1.Text 
=   " Run " ;

            btn1.Click
+= new  EventHandler(btn1_Click);

 

            Button btn2 
=   new  Button();

            btn2.Name 
=   " btnRemove " + index.ToString();

            btn2.Text 
=   " Remove " ;

            btn2.Click
+= new  EventHandler(btn2_Click);

 

            
this .dataGridView1.Controls.Add(btn1);

            
this .dataGridView1.Controls.Add(btn2);

            
this .dataGridView1.Columns[ 3 ].Width  =  btn1.Width  +  btn2.Width  +   6 ;

            btn1.Location 
=   new  System.Drawing.Point((( this .dataGridView1.GetCellDisplayRectangle( 3 , index,  true ).Left)),  this .dataGridView1.GetCellDisplayRectangle( 3 , index,  true ).Y);

            btn2.Location 
=   new   System.Drawing.Point((( this .dataGridView1.GetCellDisplayRectangle( 3 , index,  true ).Right - 1 -  (btn2.Width)),  this .dataGridView1.GetCellDisplayRectangle( 3 , index,  true ).Y);        

}

 

(3)为(2)中生成的Run按钮和Remove按钮添加单击事件处理程序

 

public   void  btn1_Click( object  sender, EventArgs e)

{

            
this .richTextBox1.Text  =   "" ;

            Button btn 
=  (Button)(sender);

            
// 这个btn的name是btnRun打头的

            
string  suffix  =  btn.Name.ToString().Substring( 6 );  // 后边那个号,相当于index的string

            Control c 
=  findControlByName(suffix);  

            
if  (c  !=   null )

            {

                ComboBox com 
=  (ComboBox)(c);

         
// Control ctl1 = this.dataGridView1.Controls["Containers" + i.ToString()];

        
// ComboBox com = (ComboBox)ctl1;  其实这样写更简单点

                
for  ( int  i  =   0 ; i  <  com.Items.Count; i ++ )

                {

                    
this .richTextBox1.Text  +=  com.Items[i].ToString()  +   " \n " ;

                }

            }

}

 

public   void  btn2_Click( object  sender, EventArgs e)  

{

  

      
int  RowCount  =   this .dataGridView1.Rows.Count;

      Button btn 
=  (Button)(sender);

            
// 这个btn的name是btnRemove打头的

            
string  suffix  =  btn.Name.ToString().Substring( 9 );   // 后边那个号,相当于index的string

            
this .dataGridView1.Controls.RemoveByKey(btn.Name);

            
this .dataGridView1.Controls.RemoveByKey( " btnRun "   +  suffix);

            
this .dataGridView1.Controls.RemoveByKey( " Containers "   +  suffix);

            
int  index  =  Convert.ToInt32(suffix);

            
this .dataGridView1.Rows.RemoveAt(index);

       
if  (index  <  RowCount  -   2 )

            {

                
for  ( int  i  =  index  +   1 ; i  <  RowCount  -   1 ; i ++ )  

                {

                    Control ctl1 
=   this .dataGridView1.Controls[ " Containers "   +  i.ToString()];

                    Control ctl2 
=   this .dataGridView1.Controls[ " btnRun "   +  i.ToString()];

                    Control ctl3 
=   this .dataGridView1.Controls[ " btnRemove "   +  i.ToString()];

                    ComboBox com 
=  (ComboBox)ctl1;

                    Button btnRun 
=  (Button)ctl2;

                    Button btnRemove 
=  (Button)ctl3;

                    
// 上移一格,单元格Height位4,Button的Height为23

                    com.Location 
=   new  System.Drawing.Point(com.Location.X, com.Location.Y  -   23 );

                    btnRun.Location 
=   new  System.Drawing.Point(btnRun.Location.X, btnRun.Location.Y  -   23 );

                    btnRemove.Location 
=   new  System.Drawing.Point(btnRemove.Location.X, btnRemove.Location.Y  -   23 );

                    
// 改名字的后缀

                    
int  j = i - 1 ;

                    com.Name 
=   " Containers "   +  j.ToString();

                    btnRun.Name 
=   " btnRun "   +  j.ToString();

                    btnRemove.Name 
=   " btnRemove "   +  j.ToString();

                }

            }

}

 

(4)btn1_Click处理中用到的函数findControlByName()

 

public  Control findControlByName( string  suffix)

{

            
foreach  (System.Windows.Forms.Control c  in   this .dataGridView1.Controls)

            {

                
if  (c.Name  ==   " Containers "   +  suffix)

                    
return  c;

            }

            
return   null ;

}

 

转载于:https://www.cnblogs.com/afish1984/archive/2009/07/12/1522040.html

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