SystemTrayMenu/Utilities/DataGridViewExtensions.cs
2020-05-06 02:39:38 +02:00

39 lines
1.3 KiB
C#

using System.Data;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
namespace SystemTrayMenu.Utilities
{
internal static class DataGridViewExtensions
{
/// <summary>
/// dgv.AutoResizeColumns() was too slow ~45ms
/// </summary>
/// <param name="dgv"></param>
internal static void FastAutoSizeColumns(this DataGridView dgv)
{
System.Collections.Generic.IEnumerable<DataGridViewRow> rows =
dgv.Rows.Cast<DataGridViewRow>();
using (Graphics gfx = dgv.CreateGraphics())
{
int i = 1;
gfx.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
float widthMax = dgv.Columns[i].HeaderCell.Size.Width;
foreach (DataGridViewRow row in rows)
{
float checkWidth = gfx.MeasureString(
row.Cells[i].Value.ToString() + "_",
dgv.RowTemplate.DefaultCellStyle.Font
).Width * Scaling.Factor;
if (checkWidth > widthMax)
{
widthMax = checkWidth;
}
}
dgv.Columns[i].Width = (int)(widthMax + 0.5);
}
}
}
}