从VB转换的C#不起作用

Question

我使用代码转换器从VB转到C#,我在c#中遇到错误.特别是,错误Item等等string.join(",", Flop.ToArray).错误说它不包含定义item但它在VB中有效.

VB

Dim Flop As New List(Of String)
    For x As Integer = 0 To Dataset9.Tables(0).Rows.Count - 1 'ROWS
        Flop.Add(Dataset9.Tables(0).Rows(x).Item("Id"))
    Next
    strAllRoleNames = String.Join(",", Flop.ToArray)

C#

List<string> Flop = new List<string>();

    for (int x = 0; x <= Dataset9.Tables[0].Rows.Count - 1; x++)
      {
         Flop.Add(Dataset9.Tables[0].Rows[x].Item["Id"]);
      }
 strAllRoleNames = string.Join(",", Flop.ToArray);

Answer 1

试试这个:

List<string> Flop = new List<string>();

    for (int x = 0; x <= Dataset9.Tables[0].Rows.Count - 1; x++)
      {
         Flop.Add(Dataset9.Tables[0].Rows[x]["Id"].ToString());
      }
 strAllRoleNames = string.Join(",", Flop.ToArray());

他们在这里失踪了三把钥匙

1. 连续访问项目时,需要使用C#默认索引器,因为C#中不存在Item
2. 由于连续的单元格是一个对象,并且您需要一个字符串,因此需要显式调用ToString
3. 调用ToArray时,需要C#末尾的()