CODEWITHSUNDEEP
c#winformsdatagridview
A.Pissicat
A.Pissicat

Reputation: 3295

Unable to select value in DataGridViewComboBoxColumn

I have a winform project containing a DataGridView.

There is the column :

this.ColumnComboBox.FillWeight = 103.2981F;
this.ColumnComboBox.HeaderText = "Test ComboBox";
this.ColumnComboBox.Items.AddRange(new object[] {
"test1",
"test2",
"test3"});
this.ColumnComboBox.Name = "ColumnComboBox";
this.ColumnComboBox.ReadOnly = true;

I've try to set ReadOnly to false in [Design] windows but the designer always replace it by the code above.

Also, my DataGridView contains this event :

private void Gridview1_CellValueNeeded(object sender, DataGridViewCellValueEventArgs e)
{

    switch (e.ColumnIndex)
    {
        // ComboBoxColumn
        case 3:
            DataGridViewComboBoxCell comboCell = Gridview1.Rows[e.RowIndex].Cells[e.ColumnIndex] as DataGridViewComboBoxCell;
            if (listItem[e.RowIndex] is DisplayComboClass)
            {
                comboCell.DisplayStyle = DataGridViewComboBoxDisplayStyle.DropDownButton;
            }
            else
            {
                comboCell.DisplayStyle = DataGridViewComboBoxDisplayStyle.Nothing;
            }
            break;
    }
}

I don't know why but when I run my project, my DataGridView displays combobox when it's needed but I can't select a value. When I click on it, nothing happens, values "test1/2/3" doesn't appear.

Upvotes: 0

Views: 962

Answers (2)

Emil Kmetski
Emil Kmetski

Reputation: 11

There is other setting that also preventing the draw of the combos if DataGridView.EditMode = System.Windows.Forms.DataGridViewEditMode.EditProgrammatically; Hope helps some body.

Upvotes: 0

Berkay Yaylacı
Berkay Yaylacı

Reputation: 4513

Try,

DataGridView.ReadOnly = false;

after InitializeComponent(),

Hope helps,

Upvotes: 2

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