/// <summary>
/// 使列宽等于该列最长单元格长，可设置列显示或隐藏
/// </summary>
/// <param name="dg"></param>
/// <param name="Len">为0表示显示，为1表示隐藏</param>
public static void SetStyle(DataGrid dg, params int[] Len)
{
if (dg.DataSource == null)
{
return;
}
DataTable dt;
switch (dg.DataSource.GetType().ToString())
{
case "System.Data.DataSet":
dt = ((DataSet)dg.DataSource).Tables[dg.DataMember];
break;
case "System.Data.DataView":
dt = ((DataView)dg.DataSource).Table;
break;
case "System.Data.DataTable":
dt = (DataTable)dg.DataSource;
break;
default:
dt = (DataTable)dg.DataSource;
break;
}
DataGridTableStyle style = new DataGridTableStyle();
style.MappingName = dg.DataSource.ToString();
style.AlternatingBackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));
style.BackColor = System.Drawing.SystemColors.Info;
style.GridLineColor = System.Drawing.SystemColors.HotTrack;
style.SelectionBackColor = Color.Red;
ColumnInfo[] mColumnInfo = new ColumnInfo[dt.Columns.Count];
for (int i = 0; i < dt.Columns.Count; i++)
{
ColumnInfo ci = new ColumnInfo();
ci.Name = dt.Columns[i].ColumnName;
ci.DataType = dt.Columns[i].DataType.ToString();
ci.CompareStringLength(ci.Name);
mColumnInfo[i] = ci;
}
foreach (DataRow dr in dt.Rows)
{
for (int i = 0; i < dt.Columns.Count; i++)
{
if (!dr.IsNull(i))
{
mColumnInfo[i].CompareStringLength(dr[i].ToString());
}
}
}
DataGridColumnStyle col;
for (int i = 0; i < dt.Columns.Count; i++)
{
if (dt.Columns[i].DataType.FullName == "System.Boolean")
{
col = new DataGridBoolColumn();
}
else
{
col = new DataGridTextBoxColumn();
}
col.MappingName = mColumnInfo[i].Name;
col.HeaderText = mColumnInfo[i].Name;
col.Width = (int)mColumnInfo[i].Width(dg, Len[i]);
col.Alignment = HorizontalAlignment.Left;
col.NullText = string.Empty;
style.GridColumnStyles.Add(col);
}
dg.TableStyles.Clear();
dg.TableStyles.Add(style);
dg.ReadOnly = true;
dg.BackgroundColor = Color.White;
dg.AllowSorting = true;
}
