datagridview combobox cell c#

Question

My code:

 DataGridViewComboBoxCell cell = new DataGridViewComboBoxCell();     
 DataTable data = new DataTable();

data.Columns.Add(new DataColumn("Value", typeof(string)));
data.Columns.Add(new DataColumn("Description", typeof(string)));



data.Rows.Add("5", "6");
data.Rows.Add("51", "26");
data.Rows.Add("531", "63");
cell.DataSource = data;
cell.ValueMember = "Value";
cell.DisplayMember = "Description";

cell.DisplayStyle = DataGridViewComboBoxDisplayStyle.ComboBox;
dataGridView1.Rows[0].Cells[0] = cell;

It displays combobox but can't select any value of it. Whats wrong

Answer 1

You generally don't work with the individual cell types in the DataGridView. Instead you want to add a column of type DataGridViewComboBoxColumn.

So instead of your provided code you want something like:

var column = new DataGridViewComboBoxColumn();      
DataTable data = new DataTable(); 

data.Columns.Add(new DataColumn("Value", typeof(string))); 
data.Columns.Add(new DataColumn("Description", typeof(string))); 

data.Rows.Add("5", "6"); 
data.Rows.Add("51", "26"); 
data.Rows.Add("531", "63"); 

column.DataSource = data; 
column.ValueMember = "Value"; 
column.DisplayMember = "Description"; 

dataGridView1.Columns.Add(column); 

For reference, the documentation on the DataGridViewCombobBoxCell is on MSDN here. You can also find information on the DataGridView in general there. Another very good reference is the DataGridViewFAQ.