[英]DAO difference between C# and VBA RecordSets
在VBA中,我可能會遇到以下情況:
Dim recordSet As DAO.recordSet
result = recordSet("Column Name")
我試圖在C#中做同樣的事情,但是
result = recordSet("Column Name");
不會工作,因為C#將方括號用於集合。 但這似乎也不起作用:
result = recordSet["Column Name"];
關於上述VBA代碼的C#等效概念?
編輯:這是完整的VBA代碼,我試圖將其轉換為上下文
Public Function GetColumnValues( _
database As database, _
column As String, _
table As String _
) As String()
Dim sqlQuery As String
Dim recordSet As DAO.recordSet
Dim recordCount As Integer
Dim results() As String
sqlQuery = "SELECT [" + table + "].[" + column + "]" & _
"FROM [" + table + "];"
Set recordSet = database.OpenRecordset(sqlQuery)
recordSet.MoveLast
recordSet.MoveFirst
recordCount = recordSet.recordCount
ReDim results(recordCount) As String
For i = 1 To recordCount
results(i) = recordSet(column)
recordSet.MoveNext
Next i
recordSet.Close
GetColumnValues = results
End Function
result = recordSet.Fields["Column Name"].Value;
您正在尋找DataSet或DataTable嗎?
編輯:嘗試這樣的事情(尚未測試,需要一些錯誤處理):
public string[] GetColumnValues(string connectionString, string table, string column)
{
var connection = new SqlConnection(connectionString);
var dataAdapter = new SqlDataAdapter(
string.Format("SELECT [{0}].[{1}] FROM [{0}]", table, column), connection);
var result = new List<string>();
connection.Open();
var dataSet = new DataSet();
dataAdapter.Fill(dataSet);
if (dataSet.Tables.Count > 0)
{
result.AddRange(from DataRow row in dataSet.Tables[0].Rows select row[0].ToString());
}
connection.Close();
return result.ToArray();
}
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