Aligning the DataGridView Header a little to the left, even after setting it to MiddleCenter

Question

I set the following properties for a DataGridView in my C # project ...

sampleDataGridView.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter; sampleDataGridView.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter; 

But I notice that the header (i.e. the text in the header cell is slightly shifted to the left, for some reason). Data line rows are ideally centered, though ...

What could be the reason for this?

Answer 1

This is because there is a glyph sort (small arrow) for which the DataGridView reserves some space to display the sort order. If you want to disable the sort glyph, set the SortMode parameter in the NotSortable column, and then your text should be centered.

Answer 2

I had the same problem as you and it seems like a wireframe problem: MS Connect

Answer 3

Find out the width of the glyph without correction and suppression when failing:

In the following code, I turn sorting on and off when auto-adjusting the column width to the width of the column heading text. The difference in width between on / off sorting will show the width used by the column glyph.

When a column loses its glyph, if the column width is less than the autofill width, I suppress it by inserting symmetric left and right columns.

I also use a dictionary to store ColumnWidth events with a datagridview instance to enable and disable width events when setting the width.

I call this crazy code both for automatically loading the initial column widths and for managing column header columns when the user drags the column widths.

 void AdaptColumnHeaderText(DataGridViewColumn column, bool autoSize=false) { //Supress column width events if (dataGridViewColumnWidthEventHandlers.ContainsKey(column.DataGridView)) { dataGridView1.ColumnWidthChanged -= dataGridViewColumnWidthEventHandlers[column.DataGridView]; } //Save initial column with as preferred var w_preferred = column.Width; if ( column.SortMode.Equals(DataGridViewColumnSortMode.Automatic) && column.HeaderCell.Style.Alignment.Equals(DataGridViewContentAlignment.MiddleCenter)) { //remove all header padding column.HeaderCell.Style.Padding = new Padding(0, 0, 0, 0); //Fit column width to header text with AND sort glyph column.AutoSizeMode = DataGridViewAutoSizeColumnMode.ColumnHeader; //save column width sort enabled var w_sort = column.Width; //Fit column width to header text with NO sort glyph column.SortMode = DataGridViewColumnSortMode.NotSortable; //save column width when sort disable var w_nosort = column.Width; //Calculate width consumed by sort glyph var w_glyph = w_sort - w_nosort; //Nominal column width if glyph width applied left and right of header text var w_nominal = w_glyph + w_nosort + w_glyph; //Disable column width autosize column.AutoSizeMode = DataGridViewAutoSizeColumnMode.None; //Enable column autosorting column.SortMode = DataGridViewColumnSortMode.Automatic; //If autosize option - ignore preferred width and set to nominal if (autoSize) { w_preferred = w_nominal; } //Pad depending on final column width if (w_preferred >= w_nominal) { //Preferred width greater than nominal - pad left of text to balance width used by glyph column.HeaderCell.Style.Padding = new Padding(w_glyph, 0, 0, 0); } else { //Two symetric glyphs will not fit - pad left and right to supress glyph w_glyph = (w_preferred - w_nosort) / 2; column.HeaderCell.Style.Padding = new Padding(w_glyph, 0, w_glyph, 0); } column.Width = w_preferred; Console.WriteLine("name:{0}, glyph:{1}, w_preferred:{2}", column.Name, w_glyph, w_preferred); } //re-enable column width events if (dataGridViewColumnWidthEventHandlers.ContainsKey(column.DataGridView)) { dataGridView1.ColumnWidthChanged += dataGridViewColumnWidthEventHandlers[column.DataGridView]; } }