利用DevExpress将DataTable数据导出到Excel

using DevExpress.XtraGrid.Views.Grid;
using DevExpress.XtraEditors;
using DevExpress.XtraGrid;

/// <summary>
/// 导出Excel
/// </summary>
/// <param name="datasource"></param>
public void Export(DataTable datasource)
{
System.Windows.Forms.SaveFileDialog saveFileDialog = new System.Windows.Forms.SaveFileDialog();
saveFileDialog.DefaultExt = "xls";
saveFileDialog.Filter = "Excel文件|*.xls";
if (saveFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
GridControl grid= new GridControl();;
GridView view = new GridView();
grid.ViewCollection.Add(view);
grid.MainView = view;
view.GridControl = grid;

foreach (DataColumn dc in datasource.Columns)
{
DevExpress.XtraGrid.Columns.GridColumn gridColumnNumber = view.Columns.AddVisible(dc.ColumnName);
gridColumnNumber.FieldName = dc.ColumnName;
}

grid.DataSource = datasource;
this.Controls.Add(grid);//重要
grid.ForceInitialize();//重要
view.BestFitColumns();
view.ExportToXls(saveFileDialog.FileName);
}
}