comboBox doesn't work properly

Violeta Popa

Hello :) I have a datagridview in form 1 and in form 2 a comboBox. I want to select an item from the comboBox depending on a cell from dgv. Here's the code

SqlConnection conn = new SqlConnection();

conn.ConnectionString = "..";

conn.Open();

Acasa main = (Acasa)Application.OpenForms["Acasa"];

DataGridView dgv = main.categdaGridView;

int i = dgv.CurrentRow.Index;

textBox1.Text = dgv.Rows[i].Cells[1].Value.ToString();

textBox3.Text = dgv.Rows[i].Cells[3].Value.ToString();

comboBox1.SelectedItem = dgv.Rows[i].Cells[2].Value.ToString();

conn.Close();

but the comboBox doesn't select nothing :| if i do comboBox1.SelectedItem="discount" it works, and i checked dgv.Rows[i].Cells[2].Value.ToString(); has the same value(discount). Does anybody know what could cause it? Thank u very much.

7 Replies

Know the answer? Post it — somebody with the same question will find it here.

Dillon Goeda13y ago
I don't know anyting about sqlConnections, but I've tested it on

Private void dgv_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)

{
int i= dgv.CurrentRow.Index;

comboBox1.SelectedItem = dgv.Rows[I].Cells[1].Value.ToString();
}

Or the same code in the button1_Click(...)

If I use the first code, it change everytime click on a new row
Vulpes13y ago
Does:

comboBox1.SelectedText = "adaos";

select adaos?

If it doesn't, then possibly the value in the comboBox has some whitespace at the end?
Violeta Popa13y ago
i've tried it too
Dillon Goeda13y ago
Try using comboBox1.SelectedItem instead
Violeta Popa13y ago
I've used SelectedText and it's working, but if i select a different row, it shows the same value.
For exemple:

B1 discount 10
B2 adaos 5
B3 discount 10

if i select the first row, the cb shows discount, but if then i select the second row..doesn't show adaos, it's still discount :(
Vulpes13y ago
Assuming there are no differences in capitalization, the problem might be caused by the strings being treated as different objects even though they contain the same characters.

Try setting the comboBox1.SelectedText property instead of the SelectedItem property.
Dillon Goeda13y ago
"...select an item from the comboBox depending on a cell from dgv..." Do you mean that for example, if a user type "discount" in cell[x] the word "discount" must be selected in the combobox?