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In my WinForm Application, I used a dataGridView1 control. In this dataGridView1 I added three dataGridViewcomboBoxColumn namely: ProductCode, SelectCategory and SelectCategory. Whenever the user will select category from ProductCode dataGridViewcomboBoxColumn, data should be automatically retrieved from SQL Server 2005 database in SelectCategory and ProductName dataGridViewcomboBoxColumn. I am very new in this field.Please help me.
I wrote some code for it: but it not working

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
           if (dataGridView1.CurrentCell.ColumnIndex == 2)
               ComboBox comboBox = e.Control as ComboBox;
               if (comboBox != null)
                   comboBox.SelectedIndexChanged += new EventHandler(comboBox_SelecteIndexChanged);

       void comboBox_SelecteIndexChanged(object sender, EventArgs e)
               DataSet ds = new DataSet();
               string str = "select ProductCategory,ProductName from Product_Details where ProductID='" + dataGridView1.Rows[intRownum].Cells[2].Value + "'";
               SqlConnection con = new SqlConnection(Class1.cs);
               SqlCommand cmd = new SqlCommand(str, con);
               SqlDataAdapter da = new SqlDataAdapter(cmd);
               da.Fill(ds, "Product_Details");
               if (ds.Tables["Product_Details"].Rows.Count > 0)
                   dataGridView1.Rows[intRownum].Cells[3].Value = ds.Tables["Product_Details"].Rows[intRownum][0].ToString();
                   dataGridView1.Rows[intRownum].Cells[4].Value = ds.Tables["Product_Details"].Rows[intRownum][1].ToString();
           catch (Exception ex)

Updated 9-Dec-13 19:19pm

1 solution

Read this Article. You'll get a clear concept of how to do.
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Md M Ahmad 2-Dec-13 23:41pm    
Mr. Debopam Pal if you can't provide a proper solution on somebody's question, then please don't joke with someone by posting a unnecessary link.
Debopam Pal 2-Dec-13 23:53pm    
I'm extremely sorry...The link that I was posted somehow changed. Now Check. Is it OK?
Md M Ahmad 2-Dec-13 23:59pm    
But not much useful

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