如何在同一Winform中将一个网格的选定值获取到另一个网格 [英] how to get selected values of one grid to another grid in same winform

问题描述

你好朋友，
我在执行此代码时遇到问题.
在这里，我想选择第一个网格的多个值，但要一个接一个地选择.一旦我从一个网格中选择了值，它应该会从第一个网格中消失并在第二个网格中看到，我有这段代码在每次创建新数据表时仅在第二个网格中显示一个数据，但无法在第二个网格中获取所有选定的行网格请帮忙...
我写的代码是这样的...

hello frens,
i have a problem while doing this code.
here i want to select multiple values of first grid but one by one. as soon i select the values from one grid, it should disappear from first grid and seen in second grid, i have this code which shows only one data in second grid as everytime a new datatable is created but cannot get all the selected rows in second grid please help ...
the code i have written is like this...

private void dataGridView1_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
       {
           foreach (DataGridViewRow r in dataGridView1.SelectedRows)
           {
               int stdid = Convert.ToInt32(dataGridView1.CurrentRow.Cells[0].Value.ToString());
               string stdname = dataGridView1.CurrentRow.Cells[1].Value.ToString();

               dataGridView1.Rows.Remove(r);

               //now adding the datas into second datagridview by adding new row each time
               //first creating the column and adding new row each time


               DataTable dt = new DataTable();
               dt.Columns.Add("Student ID");
               dt.Columns.Add("Roll Number");
               dt.Columns.Add("Student Names");
               DataRow dr;
               dr = dt.NewRow();
               int i = 1;
               dr[0] = stdid;
               dr[1] = i;
               dr[2] = stdname;
               dt.Rows.Add(dr);
               i++;
               this.dataGridView2.DataSource = dt;

           }

       }

推荐答案

每次在第一个网格上选择一行时，都不要为第二个网格创建新的DataTable.
在表单加载中，为第二个网格创建DataTable和列，如下所示:

Don''t create a new DataTable for the second grid everytime you select a row on the first grid.
in the form load, create your DataTable and columns for the second grid, something like this:

private DataTable SecondDataTable = new DataTable();

private void MainForm_Load(System.Object sender, System.EventArgs e)
{
    SecondDataTable.Columns.Add("Student ID");
    SecondDataTable.Columns.Add("Roll Number");
    SecondDataTable.Columns.Add("Student Names");
}

private void dataGridView1_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
foreach (DataGridViewRow r in dataGridView1.SelectedRows)
{
int stdid = Convert.ToInt32(dataGridView1.CurrentRow.Cells[0].Value.ToString());
string stdname = dataGridView1.CurrentRow.Cells[1].Value.ToString();
 
dataGridView1.Rows.Remove(r);
 
//now adding the datas into second datagridview by adding new row each time
DataRow dr;
dr = SecondDataTable.NewRow();
int i = 1;
dr[0] = stdid;
dr[1] = i;
dr[2] = stdname;
SecondDataTable.Rows.Add(dr);
i++;
this.dataGridView2.DataSource = SecondDataTable;

} 

}

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