I use the CellContentClick event, which makes sure the user clicked the checkbox. It DOES fire multiple times even if the user stays in the same cell. The one issue is that the Value does not get updated, and always returns “false” for unchecked. The trick is to use the .EditedFormattedValue property of the cell … Read more
I am posting a solution for both Excel 2003 and Excel 2007+. You are missing ‘ in Extended Properties For Excel 2003 try this private void button1_Click(object sender, EventArgs e) { String name = “Items”; String constr = “Provider=Microsoft.Jet.OLEDB.4.0;Data Source=” + “C:\\Sample.xls” + “;Extended Properties=”Excel 8.0;HDR=YES;”;”; OleDbConnection con = new OleDbConnection(constr); OleDbCommand oconn = new … Read more
The above answer led me down the primrose path for awhile. It does not work as it causes multiple events to fire and just keeps adding events. The problem is that the above catches the DataGridViewEditingControlShowingEvent and it does not catch the value changed. So it will fire every time you focus then leave the … Read more
There’s a method on the DataGridView called “Sort”: this.dataGridView1.Sort(this.dataGridView1.Columns[“Name”], ListSortDirection.Ascending); This will programmatically sort your datagridview.
I tried this for changing the Enter behaviour for your Grid by inheriting a customcolumn from Textbox column and overriding the below event protected override bool ProcessDialogKey(Keys keyData) { if (keyData == Keys.Enter) return base.ProcessDialogKey(Keys.Tab); else return base.ProcessDialogKey(keyData); } So instead of the Enter Key being sent it emulates the action for Tab which will … Read more
Non-Selectable Button to Send Key like Virtual Keyboard It’s enough to make a non-selectable button and then handle it’s click event and send key. This way these buttons can work like virtual keyboard keys and the focus will remain on the control which has focus while it sends the key to the focused control. public … Read more
Simply create a new DataGridViewCellStyle object, set its back color and then assign the cell’s style to it: DataGridViewCellStyle style = new DataGridViewCellStyle(); style.BackColor = Color.FromArgb(((GesTest.dsEssais.FMstatusAnomalieRow)row.DataBoundItem).iColor); style.ForeColor = Color.Black; row.Cells[color.Index].Style = style;
[*] DataGridView looks at the list version of metadata; the rules for this are… complex: if the data-source implements IListSource, GetList() is evaluated and used as the data-source (continue at 2) if the data-source implements ITypedList, GetProperties() is used to obtain metadata (exit) if a typed (non-object) indexer can be found (i.e. public T this[int … Read more
You can create new DataTable, add appropriate number of collumns and then copy values from one table to the other, just swap rows and colums. I don’t think you can set row header in the same way you can set column header (or at least I don’t know how), so you can put the field … Read more
When you use the Image.FromFile(strFileName) method to create the Image, the method locks the file until you release the Image. The exact reason is explained below. And it’s why you can’t access more than one time to the same image file with this method. You could instead: use the Image.FromStream(stream) method. that you use with … Read more