/// <summary>
/// 导出数据通用属性 需在属性进行标记
/// </summary>
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Parameter | AttributeTargets.Property)]
public class ExportToExcelAttribute : Attribute
{
private string _columnName;
private int _width = 19;
public ExportToExcelAttribute(string columnName)
{
this._columnName = columnName;
}
public ExportToExcelAttribute(string columnName, int columnWidth)
{
this._columnName = columnName;
this._width = columnWidth;
}
public string ColumnName { get { return _columnName; } }
public int ColumnWidth { get { return _width; } }
}
public class ClassA
{
int id =0;
string name=string.Empty;
[ExportToExcel("ID", 25)]
public int Id
{
get { return Id; }
set { Id= value; }
}
[ExportToExcel("Name", 25)]
public int Id
{
get { return Id; }
set { Id= value; }
}
}
public class ExcelHelper
{
public void CreateReportToExcel()
{
var data = new List<ClassA>()
{
new ClassA(){Id=1,Name="张三“}，new ClassA(){Id=2,Name="张四”}
};
var expressList = new List<Expression<Func<ClassA, object>>>() {{m=>m.Id},{m=>m.Name}};
Aspose.Cells.Workbook workbook=GetExportWorkbook<ClassA>(expressList,data,"ExcelSheet1")；
Response.BinaryWrite(workbook.SaveToStream().ToArray());
Response.AppendHeader("Content-Disposition", "attachment;filename="" + HttpUtility.UrlEncode("" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls", System.Text.Encoding.UTF8) + """);
Response.ContentType = "application/ms-excel";
}
/// <summary>
/// 数据导出到excel通用方法
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="expressList"></param>
/// <param name="datas"></param>
/// <param name="WorksheetName"></param>
/// <returns></returns>
public static Workbook GetExportWorkbook<T>(List<Expression<Func<T, object>>> expressList, List<T> datas, string WorksheetName)
{
List<PropertyInfo> proList = new List<PropertyInfo>();//字段属性集合
PropertyInfo pro;
ExportToExcelAttribute att;
Workbook work = new Workbook();
work.Worksheets.Clear();
Worksheet sheet = null;
if (datas.Count > 0)
{
work.Worksheets.Add(WorksheetName);
sheet = work.Worksheets[0];
sheet.Cells.SetRowHeight(0, 30);
int i = 0;
foreach (var item in expressList)
{
pro = GetProperty(item);
proList.Add(pro);
att = pro.GetCustomAttribute<ExportToExcelAttribute>();
sheet.Cells[0, i++].PutValue(att.ColumnName);
sheet.Cells.SetColumnWidth(i - 1, att.ColumnWidth);
}
//单元格
Cells cells = sheet.Cells;
Style style1 = work.Styles[work.Styles.Add()];
style1.HorizontalAlignment = TextAlignmentType.Center;
style1.Font.Name = "宋体";
style1.Font.Size = 11;
style1.IsLocked = true;
style1.Font.IsBold = true;
int n = 1;
foreach (T item in datas)
{
int j = 0;
foreach (var p in proList)
{
sheet.Cells[n, j++].PutValue(p.GetValue(item));
}
n += 1;
}
}
return work;
}
}