Solution1:

//In Fill DataGridViewEvent :

DataGridViewCheckBoxColumn ChCol = new DataGridViewCheckBoxColumn();ChCol.Name = "CheckBoxRow";ChCol.HeaderText = "CheckboxSelection";ChCol.Width = 50;ChCol.TrueValue = "1";ChCol.FalseValue = "0";datagridview_tabpage1.Columns.Insert(0, ChCol);

// In Button Event put these codes:

datagridview 中的checkbox列是否被选中

private void button3_Click(object sender, EventArgs e){string selectRows="";for (int i = 0; i < dataGridView_tabPage1.Rows.Count - 1; i++) //循环datagridview每行{if ((bool)dataGridView_tabPage1.Rows[i].Cells[0].EditedFormattedValue == true){selectRows = selectRows + "[" + i.ToString() + "]";}}MessageBox.Show("Selected Rows:" + selectRows,"CheckBoxRows");} add check box in Datagridview

// Initialize and add a check box column.            DataGridViewColumn column = new DataGridViewTextBoxColumn();            column = new DataGridViewCheckBoxColumn();            column.DataPropertyName = "selection";            column.Name = "selection";            dataGridView_tabPage1.Columns.Add(column);

 

全选

//循环dataGridView   for (int i = 0; i < dataGridView_tabPage1.Rows.Count; i++)   {       //设置设置每一行的选择框为选中，第一列为checkbox      dataGridView_tabPage1.Rows[i].Cells[0].Value = true;   }

反选

//循环dataGridViewfor (int i = 0; i