如何取消选中datagrid中的顶级复选框 [英] How to uncheck top level checkbox in datagrid

问题描述

Hello House，



i正在处理数据网格，其中包含一个级别复选框，如果选中，则还会检查数据网格中的其他复选框（只是相同）方式yahoomail工作），这对我来说很好，我有问题取消选中顶级复选框，如果任何复选框未选中，请我需要你的帮助。这是我的代码：



全局变量：

 CheckBox chkbox = 新 CheckBox（）; 
 DataTable dt =  new  DataTable（）; 

  private   void  Form1_Load（ object  sender，EventArgs e）
 {
  //   CheckBox chkbox = new CheckBox（）;  
 dataGridView1.AllowUserToAddRows =  false ; 
 
 dataGridView1.Columns.Clear（）; 
 DataGridViewCheckBoxColumn colCB =  new  DataGridViewCheckBoxColumn（）; 
 colCB.Name =   chkcol; 
 colCB.HeaderText =  ; 
 
 colCB.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter; 
 dataGridView1.Columns.Add（colCB）; 
 
 Rectangle rect =  this  .dataGridView1.GetCellDisplayRectangle（ 0 ， -  1，  true ）; 
 
 chkbox.Size =  new 大小（ 18 ， 18 ）; 
 rect.Offset（ 43 ， 2 ）; 
 chkbox.Location = rect.Location; 
 chkbox.CheckedChanged + = chkBoxChange; 
 此 .dataGridView1.Controls.Add（chkbox）; 
 
 DataRow dr =  default （DataRow）; 
 
  //  声明列名 
 dt.Columns.Add （  eno）; 
 dt.Columns.Add（  empname）; 
 dt.Columns.Add（  sal）; 
 
  //  创建包含数据的行 
 dr = dt。 NewRow（）; 
 dr [  eno] =  101 ; 
 dr [  empname] =    test1; 
 dr [  sal] =  9000 ; 
 dt.Rows.Add（dr）; 
 
 dr = dt.NewRow（）; 
 dr [  eno] =  102 ; 
 dr [  empname] =    test2; 
 dr [  sal] =  15000 ; 
 dt.Rows.Add（dr）; 
 
 dr = dt.NewRow（）; 
 dr [  eno] =  103 ; 
 dr [  empname] =    test3; 
 dr [  sal] =  20000 ; 
 dt.Rows.Add（dr）; 
 
  //  将数据表数据绑定到datagridview  
 dataGridView1 .DataSource = dt; 
} 

  private   void  dataGridView1_CellContentClick（ object  sender，DataGridViewCellEventArgs e）
 {
  double  k =  0 。 0 ; 
  if （e.ColumnIndex ==  0 ）
 {
 dataGridView1.CommitEdit（DataGridViewDataErrorContexts.Commit）; 
  for （ int  i =  0 ; i <  = dataGridView1.RowCount  -   1 ; i ++）
 {
  //   chkcol是复选框列 
  if （Convert.ToBoolean（dataGridView1.Rows [i] .Cells [  chkcol ] .Value）==  true ）
 {
k = k + Convert.ToDouble（dataGridView1.Rows [i] .Cells [ 3 ]。值）;  //   3是工资栏 
} 
} 
  //  这一个是总显示文本框 
  //   label1.Text = k.ToString（）;  
} 
} 
 

any我将不胜感激。

解决方案

查看这篇文章。我认为这就是你要找的东西



切换DataGridView列中所有CheckBox的状态

Hello House,

i am working with datagrid that has a level checkbox of which if it is checked others checkbox in the datagrid will also be checked (just the same way yahoomail works), that is working fine for me, i am having issues unchecking the top level checkbox if any of the checkboxes is unchecked, please i need your assistance. here is my code:

Global variables:

CheckBox chkbox=new CheckBox( );
        DataTable dt = new DataTable( );

private void Form1_Load(object sender, EventArgs e)
        {
            //CheckBox chkbox=new CheckBox( );
            dataGridView1.AllowUserToAddRows = false;
            
            dataGridView1.Columns.Clear( );
            DataGridViewCheckBoxColumn colCB = new DataGridViewCheckBoxColumn( );            
            colCB.Name = "chkcol";
            colCB.HeaderText = "";
           
            colCB.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
            dataGridView1.Columns.Add( colCB );

            Rectangle rect = this.dataGridView1.GetCellDisplayRectangle( 0, -1, true );
           
            chkbox.Size = new Size( 18, 18 );
            rect.Offset( 43, 2 );
            chkbox.Location = rect.Location;
            chkbox.CheckedChanged += chkBoxChange;
            this.dataGridView1.Controls.Add( chkbox );

            DataRow dr = default( DataRow );

            //Declare Column names
            dt.Columns.Add( "eno" );
            dt.Columns.Add( "empname" );
            dt.Columns.Add( "sal" );

            //Create rows with data
            dr = dt.NewRow( );
            dr["eno"] = 101;
            dr["empname"] = "test1";
            dr["sal"] = 9000;
            dt.Rows.Add( dr );

            dr = dt.NewRow( );
            dr["eno"] = 102;
            dr["empname"] = "test2";
            dr["sal"] = 15000;
            dt.Rows.Add( dr );

            dr = dt.NewRow( );
            dr["eno"] = 103;
            dr["empname"] = "test3";
            dr["sal"] = 20000;
            dt.Rows.Add( dr );

            //Bind that datatable data into the datagridview
            dataGridView1.DataSource = dt;
        }

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
       {
           double k = 0.0;
           if ( e.ColumnIndex == 0 )
           {
               dataGridView1.CommitEdit( DataGridViewDataErrorContexts.Commit );
               for ( int i = 0 ; i <= dataGridView1.RowCount - 1 ; i++ )
               {
                   //chkcol is checkbox column
                   if ( Convert.ToBoolean( dataGridView1.Rows[i].Cells["chkcol"].Value ) == true )
                   {
                       k = k + Convert.ToDouble( dataGridView1.Rows[i].Cells[3].Value );      //3 is salary column
                   }
               }
               //This one is total display textbox
               //label1.Text = k.ToString( );
           }
       }

any assistance will be appreciated thanks.

解决方案

Check this Article.I thinks this is what you are looking for

Toggling the States of all CheckBoxes Inside a DataGridView Column

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