silverlight 导出DataGrid 数据到Excel

#region
/// <summary>
/// CSV格式化
/// </summary>
/// <param name="data">数据</param>
/// <returns>格式化数据</returns>
private static string FormatCsvField(string data)
{
return String.Format("\"{0}\"", data.Replace("\"", "\"\"\"").Replace("\n", "").Replace("\r", ""));
}

/// <summary>
/// 导出DataGrid数据到Excel
/// </summary>
/// <param name="withHeaders">是否需要表头</param>
/// <param name="grid">DataGrid</param>
/// <returns>Excel内容字符串</returns>
public static string ExportDataGrid(bool withHeaders, DataGrid grid)
{
System.Reflection.PropertyInfo propInfo;
System.Windows.Data.Binding binding;
var strBuilder = new System.Text.StringBuilder();
var source = (grid.ItemsSource as System.Collections.IList);
if (source == null) return "";
var headers = new List<string>();
grid.Columns.ToList().ForEach(col =>
{
if (col is DataGridBoundColumn)
{ headers.Add(FormatCsvField(col.Header.ToString())); }
});
strBuilder.Append(String.Join(",", headers.ToArray())).Append("\r\n");
foreach (Object data in source)
{
var csvRow = new List<string>();
foreach (DataGridColumn col in grid.Columns)
{
if (col is DataGridBoundColumn)
{
binding = (col as DataGridBoundColumn).Binding;
string colPath = binding.Path.Path;
propInfo = data.GetType().GetProperty(colPath);
if (propInfo != null)
{
csvRow.Add(FormatCsvField(propInfo.GetValue(data, null).ToString()));
}
}
}
strBuilder.Append(String.Join(",", csvRow.ToArray())).Append("\r\n");
}
return strBuilder.ToString();
}

/// <summary>
/// 导出DataGrid数据到Excel
/// </summary>
/// <param name="withHeaders">是否需要表头</param>
/// <param name="grid">DataGrid</param>
/// <param name="dataBind"></param>
/// <returns>Excel内容字符串</returns>
public static string ExportDataGrid(bool withHeaders, DataGrid grid, bool dataBind)
{
var strBuilder = new System.Text.StringBuilder();
var source = (grid.ItemsSource as System.Collections.IList);
if (source == null) return "";
var headers = new List<string>();
grid.Columns.ToList().ForEach(col =>
{
if (col is DataGridTemplateColumn)
{
headers.Add(col.Header != null ? FormatCsvField(col.Header.ToString()) : string.Empty);
}
});
strBuilder.Append(String.Join(",", headers.ToArray())).Append("\r\n");
foreach (Object data in source)
{
var csvRow = new List<string>();
foreach (DataGridColumn col in grid.Columns)
{
if (col is DataGridTemplateColumn)
{
FrameworkElement cellContent = col.GetCellContent(data);
TextBlock block;
if (cellContent.GetType() == typeof(Grid))
{
block = cellContent.FindName("TempTextblock") as TextBlock;
}
else
{
block = cellContent as TextBlock;
}
if (block != null)
{
csvRow.Add(FormatCsvField(block.Text));
}
}
}
strBuilder.Append(String.Join(",", csvRow.ToArray())).Append("\r\n");
//strBuilder.Append(String.Join(",", csvRow.ToArray())).Append("\t");
}
return strBuilder.ToString();
}
/// <summary>
/// 导出DataGrid数据到Excel为CVS文件
/// 使用utf8编码 中文是乱码 改用Unicode编码
///
/// </summary>
/// <param name="withHeaders">是否带列头</param>
/// <param name="grid">DataGrid</param>
public static void ExportDataGridSaveAs(bool withHeaders, DataGrid grid)
{
string data = ExportDataGrid(true, grid);
var sfd = new SaveFileDialog
{
DefaultExt = "csv",
Filter = "CSV Files (*.csv)|*.csv|All files (*.*)|*.*",
FilterIndex = 1
};
if (sfd.ShowDialog() == true)
{
using (Stream stream = sfd.OpenFile())
{
using (var writer = new StreamWriter(stream, System.Text.Encoding.Unicode))
{
data = data.Replace(",", "\t");
writer.Write(data);
writer.Close();
}
stream.Close();
}
}
}

#endregion 导出DataGrid数据到Excel