datatable 数据导出为csv格式文件(C#描述)

 1    //导出为svc文件
 2        public void ExportToSvc(System.Data.DataTable dt,string strName)
 3        {
 4             string strPath= Path.GetTempPath()+strName+".csv";
 5        
 6            if (File.Exists(strPath))
 7            {
 8                File.Delete(strPath);
 9            }
10            //先打印标头
11            StringBuilder strColu=new StringBuilder();
12            StringBuilder strValue=new StringBuilder();
13            int i=0;
14    
15            try
16            {
17                StreamWriter sw = new StreamWriter(new FileStream(strPath, FileMode.CreateNew), Encoding.GetEncoding("GB2312"));
18
19                for( i=0;i<=dt.Columns.Count-1;i++)
20                {
21                    strColu.Append(dt.Columns[i].ColumnName);
22                    strColu.Append(",");
23                }
24                strColu.Remove(strColu.Length-1,1);//移出掉最后一个,字符
25
26                sw.WriteLine(strColu);
27
28                foreach(DataRow dr in dt.Rows)
29                {
30                    strValue.Remove(0,strValue.Length);//移出
31        
32                    for(i=0;i<=dt.Columns.Count-1;i++)
33                    {
34                        strValue.Append(dr[i].ToString());
35                        strValue.Append(",");
36                    }
37                    strValue.Remove(strValue.Length-1,1);//移出掉最后一个,字符
38                    sw.WriteLine(strValue);
39                }
40                
41                sw.Close();
42            }
43            catch(Exception ex)
44            {
45                MessageBox.Show(ex.Message);
46
47            }
48
49            System.Diagnostics.Process.Start(strPath);
50                
51        }
52