Set Combobox selected item based on its ItemsValue

Question

I have a Combobox, in which let's say that an item's Display Text is "School" and it's Item Value is 19. So i have stored this 19 into a DataGrid.

Then, i retrieve Combobox Value from DataGrid, then what i want to do is simply that based on value retrieved from DataGrid, combobox should set it's display Item or SelectedItem which have Value 19. In above scenario Combobox should display its selected item "School" if its value was 19.

So far i have wrote code upto this point. But it always giving me First Item of a Combobx.

            DataGrid gd = (DataGrid)sender;
        DataRowView rowSelected = gd.SelectedItem as DataRowView;
        if(rowSelected!=null)
        {
            for (int i = 0; i < comboBox1.Items.Count;i++ )
            {
                if (Convert.ToString(comboBox1.SelectedValue) == Convert.ToString(rowSelected[14]))
                {
                    index = comboBox1.Items.IndexOf(comboBox1.SelectedValue);
                }
                comboBox1.SelectedItem= comboBox1.Items[index];
            }
            textBox9.Text=rowSelected[14].ToString();

        }

Possible duplicate of [How do I find an item by value in an combobox in C#?](https://stackoverflow.com/questions/10160708/how-do-i-find-an-item-by-value-in-an-combobox-in-c) — Lucifer, Jun 19 '18 at 04:05
When i wrote this comboBox1.Items[index]; this thing gave me error which is this only assignment, call, increment, decrement , expression can be used as a statement. — Niazi, Jun 19 '18 at 04:09
It is working now but it is always returning me 1st Item of Combobox. I have edited my code in question please have a look on it. — Niazi, Jun 19 '18 at 04:28
Because to search for Item for which value matches so that can get this item — Niazi, Jun 19 '18 at 04:33
Basically i want to get item in Combobox whose value matches with the items in combobox — Niazi, Jun 19 '18 at 04:34
see you're using `ComboBox1.SelectedValue` so there is no need to loop over all of them — Lucifer, Jun 19 '18 at 04:34
but it is giving me first value each time. My problem is not being resolved — Niazi, Jun 19 '18 at 04:41
can you tell me how to search for item with matching value ? — Niazi, Jun 19 '18 at 04:42

Lucifer · Answer 1 · 2018-07-05T09:16:13.537

0

Change your code to

if(rowSelected!=null)
{
    int index = comboBox1.Items.IndexOf(rowSelected[14]);
    comboBox1.SelectedItem = comboBox1.Items[index];
}

or

Use FindStringExact() method of combobox

int i = comboBox1.FindStringExact("Combo"); 
if(i >= 0)
{
}

edited Jul 05 '18 at 09:16

answered Jun 19 '18 at 04:45

Lucifer

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score 0 · Answer 2 · answered Jun 19 '18 at 04:47

Now i am able to retrieve the Combobox Item, Based on its value which i am retrieving from the WPF DataGrid.

            for (int i = 0;i <comboBox1.Items.Count; i++)
            {
                comboBox1.SelectedIndex = i;
                if ((string)(comboBox1.SelectedValue) == Convert.ToString(rowSelected[14]))
                {
                    index = i;
                }

            }

            comboBox1.SelectedIndex = index;

Set Combobox selected item based on its ItemsValue

2 Answers2