如何從文本文件導入到ASP.NET GridView的

Question

我試圖使用自爆代碼從文本文件導入數據到網格視圖：

DataTable dt = new DataTable(); 
using (System.IO.TextReader tr = File.OpenText((@"d:\\My File3.log"))) 
{ 
    string line; 
    while ((line = tr.ReadLine()) != null) 
    { 

     string[] items = line.Trim().Split(' '); 
     if (dt.Columns.Count == 0) 
     { 
      // Create the data columns for the data table based on the number of items 
      // on the first line of the file 
      for (int i = 0; i < items.Length; i++) 
       dt.Columns.Add(new DataColumn("Column" + i, typeof(string))); 
     } 
     dt.Rows.Add(items); 

    } 
    //show it in gridview 
    this.GridView1.DataSource = dt; 
    this.GridView1.DataBind(); 

我的文件是這樣的：

ABC

EFDCC

EDDD

DP

然後我收到以下錯誤

輸入數組比列數較長此表在C＃應用程序

Answer 1

開始嘗試從列循環計數物品數組的長度。

DataTable dt = new DataTable(); 
using (System.IO.TextReader tr = File.OpenText((@"d:\\My File3.log"))) 
{ 
string line; 
while ((line = tr.ReadLine()) != null) 
{ 

    string[] items = line.Trim().Split(' '); 
    if (dt.Columns.Count < items.Length) 
    { 
     // Create the data columns for the data table based on the number of items 
     // on the first line of the file 
     for (int i = dt.Columns.Count; i < items.Length; i++) 
      dt.Columns.Add(new DataColumn("Column" + i, typeof(string))); 
    } 
    dt.Rows.Add(items); 

} 
//show it in gridview 
this.GridView1.DataSource = dt; 
this.GridView1.DataBind();