.net mvc 导出excel表格

使用using System.IO;

 1         /// <summary>
 2         /// 导出Excel文件，并自定义文件名
 3         /// </summary>
 4         public static void DataTable3Excel(System.Data.DataTable dtData, String FileName)
 5         {
 6             GridView dgExport = null;
 7             HttpContext curContext = HttpContext.Current;
 8             StringWriter strWriter = null;
 9             HtmlTextWriter htmlWriter = null;
10 
11             if (dtData != null)
12             {
13                 HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8);
14                 curContext.Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");
15                 curContext.Response.ContentType = "application nd.ms-excel";
16                 curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
17                 curContext.Response.Charset = "GB2312";
18                 strWriter = new StringWriter();
19                 htmlWriter = new HtmlTextWriter(strWriter);
20                 dgExport = new GridView();
21                 dgExport.DataSource = dtData.DefaultView;
22                 dgExport.AllowPaging = false;
23                 dgExport.DataBind();
24                 dgExport.RenderControl(htmlWriter);
25                 curContext.Response.Write(strWriter.ToString());
26                 curContext.Response.End();
27             }
28         }

ToDataTableClass类

 1     public static class ToDataTableClass
 2     {
 3         /// <summary>
 4         /// Convert a List{T} to a DataTable.
 5         /// </summary>
 6         public static DataTable ToDataTable<T>(List<T> items)
 7         {
 8             var tb = new DataTable(typeof(T).Name);
 9 
10             PropertyInfo[] props = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);
11 
12             foreach (PropertyInfo prop in props)
13             {
14                 Type t = GetCoreType(prop.PropertyType);
15                 tb.Columns.Add(prop.Name, t);
16             }
17 
18             foreach (T item in items)
19             {
20                 var values = new object[props.Length];
21 
22                 for (int i = 0; i < props.Length; i++)
23                 {
24                     values[i] = props[i].GetValue(item, null);
25                 }
26 
27                 tb.Rows.Add(values);
28             }
29 
30             return tb;
31         }
32         /// <summary>
33         /// Determine of specified type is nullable
34         /// </summary>
35         public static bool IsNullable(Type t)
36         {
37             return !t.IsValueType || (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable<>));
38         }
39         /// <summary>
40         /// Return underlying type if type is Nullable otherwise return the type
41         /// </summary>
42         public static Type GetCoreType(Type t)
43         {
44             if (t != null && IsNullable(t))
45             {
46                 if (!t.IsValueType)
47                 {
48                     return t;
49                 }
50                 else
51                 {
52                     return Nullable.GetUnderlyingType(t);
53                 }
54             }
55             else
56             {
57                 return t;
58             }
59         }
60     }

controller：

1         public ActionResult GetData(string keyValue,string filename)
2         {
3 
4             System.Data.DataTable __dtData = _userExamApp.GetData(keyValue);
5             ExcelHelper.DataTable3Excel(__dtData, filename + "的试卷记录");
6 
7         }

app:

 1         public DataTable GetData(string keyValue)
 2         {
 3             DataTable __mydt = ToDataTableClass.ToDataTable(Get(keyValue));
 4             __mydt.Columns.Remove("A1");
 5             __mydt.Columns.Remove("A2");
 6             __mydt.Columns["A3"].ColumnName = "A3Name";
 7             __mydt.Columns["A4"].ColumnName = "A4Name"; 9 
10             return __mydt;
11         }