以另一种形式将数据从一个数据网格视图发送到另一个数据网格视图

Question

The following method is used by me to send all rows from a data grid view in a form(datagridview1 of form1) to another data grid view of another form(datagridview1 of form2) when a button is clicked.

     private void button2_Click(object sender, EventArgs e)
        {
           Form2 f2 = new Form2();
            DataTable dt1 = new DataTable();
            f2.dataGridView1.DataSource = dt1;

            foreach (DataGridView row in dataGridView1.Rows)
            {
                int n = f2.dataGridView1.Rows.Add();
                foreach (DataGridViewColumn col in dataGridView1.Columns)
                {
                    f2.dataGridView1.Rows[n].Cells[col.Index].Value = dataGridView1.Rows[row.Index].Cells[col.Index].Value.ToString();

}
            }

        }

But no data is sent to datagridview1 of form2! how can i correct this?

Answer 1

Depending on the circumstances, I'd work with a data source, ie this way

VB.NET

Dim dt as New DataTable
dt = ds.Tables(0)

Me.DataGridView1.datasource = dt

Form2.DataGridView2.datasource = dt

C#

DataTable dt = new DataTable();
dt = ds.Tables(0);

this.DataGridView1.datasource = dt;

Form2.DataGridView2.datasource = dt;

If you wanted to modify one of them independently, you need a second datatatable:

Dim dt2 as New DataTable
dt2 = dt.Copy()   ' copies datatable structure AND the data
Form2.DataGridView2.datasource = dt