silverliht telerlik表格导出Excel，Word，XML，csv

本文介绍了一个使用 C# 实现的功能，该功能允许用户从网格视图中选择不同格式（如 Excel、CSV 或 Word）进行数据导出。通过 RadComboBox 控件选取格式，并根据选定的格式设置文件扩展名及过滤器。

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 string extension = "";
            ExportFormat format = ExportFormat.Html;
            ExportFormat format = ExportFormat.Html;
            RadComboBoxItem comboItem = this.rcb_format.SelectedItem as RadComboBoxItem;
            string selectedItem = comboItem.Content.ToString();

            switch (selectedItem)
            {
                case "Excel": extension = "xls";
                    format = ExportFormat.Html;
                    break;
                case "ExcelML": extension = "xml";
                    format = ExportFormat.ExcelML;
                    break;
                case "Word": extension = "doc";
                    format = ExportFormat.Html;
                    break;
                case "Csv": extension = "csv";
                    format = ExportFormat.Csv;
                    break;
            }

            SaveFileDialog dialog = new SaveFileDialog();
            dialog.DefaultExt = extension;
            dialog.Filter = String.Format("{1} files (*.{0})|*.{0}|All files (*.*)|*.*", extension, "Excel"); 
            dialog.FilterIndex = 1;
            dialog.DefaultFileName = "123.xls";
            if (dialog.ShowDialog().Value)
            {
                using (Stream stream = dialog.OpenFile())
                {
                    GridViewExportOptions exportOptions = new GridViewExportOptions(); 
                    exportOptions.Format = format;
                    exportOptions.ShowColumnFooters = true;
                    exportOptions.ShowColumnHeaders = true;
                    exportOptions.ShowGroupFooters = true;
                    exportOptions.Encoding = UnicodeEncoding.GetEncoding("UTF-8"); //编码格式
                    this.GridView.Export(stream, exportOptions);   
                }
            }