读取tex文件并在数据网格视图中填充数据 [英] to read tex file and fill the data in data grid view

问题描述

  Dim  streamReader  As  IO.StreamReader = 新 IO.StreamReader（  D：\ PORTFOLIO1.txt）
 
  while  streamReader.Peek（）<> -1 
  Dim  ROWVALUE  As   String  
  Dim  CELLVALUE（ 7 ） As  字符串 
 ' 昏暗的MYROWCOUNT As String = DataGridView1.Rows.Count  -  1  
 '  Dim MYCOLUMCOUNT As String = DataGridView1。 ColumnCount  -  1  
 
 
 ROWVALUE = streamReader.ReadLine（）
 CELLVALUE（ 7 ）= ROWVALUE .Split（ ，）' 检查什么是你的分隔符 
 DataGridView1.Rows.Add（cellValue）
 结束   

文件d：portfolio1.txt包含

，N，Copper，20-05-2015， N，铜

i在运行上面的代码时遇到错误，

i请求你解决上面代码中的问题

解决方案

问题在于如何处理数组...

CELLVALUE是一个包含7个元素的字符串数组...

String.Split（）返回一个数组......

但是！您尝试将该数组从Split（）方法推送到CELLVALUE数组的第7个元素!!!

您应该执行以下操作：

  Dim  CELLVALUE 作为 字符串（ ）
 
 CELLVALUE = ROWVALUE.Split（ ，）

Dim streamReader As IO.StreamReader = New IO.StreamReader("D:\PORTFOLIO1.txt")

While streamReader.Peek() <> -1
    Dim ROWVALUE As String
    Dim CELLVALUE(7) As String
    'Dim MYROWCOUNT As String = DataGridView1.Rows.Count - 1
    'Dim MYCOLUMCOUNT As String = DataGridView1.ColumnCount - 1


    ROWVALUE = streamReader.ReadLine()
    CELLVALUE(7) = ROWVALUE.Split(",") 'check what is ur separator
    DataGridView1.Rows.Add(cellValue)
End While

The file "d:portfolio1.txt" contains

,,N,Copper,20-05-2015,N,copper

i am facing errors when running my the above code,
i request you to solve the problem in the above code

解决方案

The problem is about how you handle arrays...
CELLVALUE is a string array of 7 elements...
String.Split() returns an array...
But! You try to push that array from Split() method into the 7th element of the CELLVALUE array!!!
You should do something like this:

Dim CELLVALUE As String()

CELLVALUE = ROWVALUE.Split(",") 

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