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anji marothu
NA
45
51.2k
DataGridViewCombobox value is not valid
May 29 2013 5:27 AM
hi i was retrieved the data from database and ataching to the gridview but it shows DataGridViewCombobox value is not valid. how to handle this....
This is my code.....
private void OperationsonGridview_Load(object sender, EventArgs e)
{
DataGridViewCheckBoxColumn chk = new DataGridViewCheckBoxColumn();
chk.HeaderText = "Select";
chk.Name = "chk";
chk.AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells;
chk.FlatStyle = FlatStyle.Standard;
chk.ThreeState = false;
//Creaeting ComboBox Column for DataGridView:
DataGridViewComboBoxColumn combo = new DataGridViewComboBoxColumn();
combo.HeaderText = "gender";
combo.FlatStyle = FlatStyle.Standard;
//Adding Item to ComBoxColumn:
combo.Items.Add("male");
combo.Items.Add("female");
//Adding button Column for DataGridView:
DataGridViewButtonColumn button = new DataGridViewButtonColumn();
button.HeaderText = "Delete";
button.FlatStyle = FlatStyle.Popup;
button.DefaultCellStyle.BackColor = Color.Red;
button.DefaultCellStyle.ForeColor = Color.White;
//Adding All Column to DataGridView:
dataGridView1.Columns.Insert(0, chk);
dataGridView1.Columns.Add("", "Name");
dataGridView1.Columns.Add("", "Qualification");
dataGridView1.Columns.Insert(3, combo);
dataGridView1.Columns.Insert(4, button);
dataGridView1.Columns.Add("", "ID");
//Hide ID Column:
dataGridView1.Columns[5].Visible = false;
//Assign Width For Columns:
dataGridView1.Columns[0].Width = 70;
dataGridView1.Columns[1].Width = 205;
dataGridView1.Columns[2].Width = 120;
dataGridView1.Columns[3].Width = 190;
dataGridView1.Columns[4].Width = 90;
//Color and Font Design For DataGridView:
dataGridView1.DefaultCellStyle.Font = new Font("Calibri", 10.25f, FontStyle.Regular);
dataGridView1.ColumnHeadersDefaultCellStyle.Font = new Font("Calibri", 11, FontStyle.Regular);
dataGridView1.ColumnHeadersDefaultCellStyle.BackColor = Color.BurlyWood;
dataGridView1.EnableHeadersVisualStyles = false;
dataGridView1.RowHeadersVisible = false;
dataGridView1.BackgroundColor = Color.White;
cn.Open();
string sql = "select * from REG_USER";
SqlCommand cmd = new SqlCommand(sql, cn);
SqlDataReader dr = cmd.ExecuteReader();
dataGridView1.Columns[5].Visible = false;
while (dr.Read())
{
DataGridViewRow row = (DataGridViewRow)dataGridView1.Rows[0].Clone();
row.Cells[1].Value = dr["name"].ToString();
row.Cells[2].Value = dr["qualification"].ToString();
//here showing the error because row.Cells[3] have a combobox
row.Cells[3].Value = dr["gender"].ToString();
row.Cells[4].Value = "delete";
row.Cells[5].Value = dr["id"].ToString();
dataGridView1.Columns[5].Visible = false;
dataGridView1.Rows.Add(row);
}
cn.Close();
}
thank you...
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