Can someone help me? I want to display all values from a specific column in a combo box using linq. I try to do it but I can't figure it out. I am new to linq and can't find a way to do it
If you want to show a list of string product names and be able to retrieve their int id you can for example:
combo.DisplayMember = "DisplayColumnName";
combo.ValueMember = "IdColumnName";
combo.DataSource = context.TableName.Select(r =>
new KeyValuePair<int, string>(r.IdColumnName, r.DisplayColumnName)).ToList();
You need to replace TableName, DisplayColumnName and IdColumnName with your actual values.
To get the ID of what the user selected (eg for further db queries) you can:
var id = (int)combo.SelectedValue;
If you want the string of what the user selected:
var s = ((KeyValuePair)combo.SelectedItem).Value;
this works.
var context = new LoginTest();
var login = context.SignUps
.Select(c => new { c.id, c.Name });
comboBox1.DataSource = login.ToList();
comboBox1.ValueMember = "id";
comboBox1.DisplayMember = "Name";
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