DataGridViewComboBoxColumn set the selectedindex

Question

hi i runtime bind the data into datagridview combobox. But how do i make it to auto display the first item? i do not able find the selectedindex from DataGridViewComboBoxColumn.

  DataGridViewComboBoxColumn cbStudentCourse = (DataGridViewComboBoxColumn)dgStudentCourse.Columns["studentCourseStatus"];
                    cbStudentCourse.DataSource = Enum.GetValues(typeof(CourseStudentStatus));
                    cbStudentCourse.DisplayIndex = 1;

-- Update ---
i saw someone doing this in solution 3
LInk
Are you sure i need such a long code to just have the first item selected??????

score 8 · Accepted Answer · answered Mar 20 '11 at 09:11

8

A DataGridViewComboBoxColumn has no SelectedIndex, and SelectedValue properties. However you can get the same behavior of SelectedValue by setting the Value property.

For instance on first index the value member has value 2 then you should set .Value = "2" to set the first index selected.

For example

myDataGridViewComboBoxColumn.Value = "20";

In your case

myDataGridViewComboBoxColumn.Value = CourseStudentStatus.EnumToBeSelected.ToString();

Here is more details about DataGridViewComboBoxColumn

answered Mar 20 '11 at 09:11

Waqas Raja

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i tried this ` cbStudentCourse.ValueMember = CourseStudentStatus.Active.ToString();` but it still showing empty – VeecoTech Mar 20 '11 at 14:01
'ValueMember' is used for binding you need to set the 'Value' property – Waqas Raja Mar 21 '11 at 13:53
+1 accidentally i did; no property of value find. only valueMember and Valuetype Available – Mohammad Faizan khan Mar 28 '14 at 13:55
you can also check here http://msdn.microsoft.com/en-us/library/system.windows.forms.datagridviewcomboboxcolumn.aspx – Mohammad Faizan khan Mar 28 '14 at 13:56

score 5 · Answer 2 · answered Jan 14 '12 at 12:15

the best way to set the value of a datagridViewComboBoxCell is:

DataTable dt = new DataTable();
dt.Columns.Add("Item");
dt.Columns.Add("Value");
dt.Rows.Add("Item1", "0");
dt.Rows.Add("Item1", "1");
dt.Rows.Add("Item1", "2");
dt.Rows.Add("Item1", "3");
DataGridViewComboBoxColumn cmb = new DataGridViewComboBoxColumn();
cmb.DefaultCellStyle.Font = new Font("Tahoma", 8, FontStyle.Bold);
cmb.DefaultCellStyle.ForeColor = Color.BlueViolet;
cmb.FlatStyle = FlatStyle.Flat;
cmb.Name = "ComboColumnSample";
cmb.HeaderText = "ComboColumnSample";
cmb.DisplayMember = "Item";
cmb.ValueMember = "Value";
DatagridView dvg=new DataGridView();
dvg.Columns.Add(cmb);
cmb.DataSource = dt;
for (int i = 0; i < dvg.Rows.Count; i++)
{
dvg.Rows[i].Cells["ComboColumnSample"].Value = (cmb.Items[0] as 
DataRowView).Row[1].ToString();
}

It worked with me very well

DataGridViewComboBoxColumn set the selectedindex

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