Problem with displaying the value of the selected row in datagridview in the combobox control

Nel

Hi ,

I have a combobox and when clicking on a datagridview row I retrieve the values of the row in the combobox, datatimepicker and other controls on the form.... But the combobox.selecteditem doesn't return the correct value. I wrote messagebox.show(Convert.ToString(comboBox1.selectedItem)) and I saw that it returns System.Data.DataGridView .

I have this line:
comboBox1.SelectedItem =Convert.ToInt32(dataGridView2.SelectedRows[0].Cells[0].Value);
but the combobox's value is not changing when clicking on different rows in the datagridview.
Can you please help me?

Thanks in advance

4 Replies

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Vulpes14y ago
Accepted answer
It's a bit long-winded but try this instead:

int val = Convert.ToInt32(dataGridView2.SelectedRows[0].Cells[0].Value);

foreach (DataRowView drv in comboBox1.Items)
{
if (Object.Equals(drv[comboBox1.DisplayMember], val))
{
comboBox1.SelectedItem = drv;
break;
}
}
0
Vulpes14y ago
'val' isn't in fact a reserved word so I don't know why changing it would have solved the problem.

I thought initially that the problem was that no rows were selected which you could have got around with:

if (dataGridView1.SelectedRows.Count > 0)
{
int val = Convert.ToInt32(dataGridView1.SelectedRows[0].Cells[0].Value);
foreach (DataRowView drv in comboBox1.Items)
{
if (Object.Equals(drv[comboBox1.DisplayMember], val))
{
comboBox1.SelectedItem = drv;
break;
}
}
}

Anyway, no matter if it's solved :)
0
Nel14y ago
OK, I solved it. The problem was val it is a reserved word I suppose, when I changed it it worked. Thanks a lot Vulpes.
0
Nel14y ago
Now I get an error:

"Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index"

in the line:

int val = Convert.ToInt32(dataGridView2.SelectedRows[0].Cells[0].Value);

even though when I insert messagebox for
Convert.ToString(dataGridView2.SelectedRows[0].Cells[0].Value)

it shows the correct value when clicking on the row in datagridview
0