Question

在我的数据库中进行简单查询时遇到问题。我将查询结果放在String列表中，然后在dataGridView中显示列表。我的DB是这样的

Time  |  Operations
......|...............
......|...............
......|...............

在操作列中，我有很长的字符串（大约24000个字符）。我的代码是

Public time= New List(Of String)
Public operations= New List(Of String)

query = "SELECT time, operations FROM TABLE1"

    Try
        SQLCon.Open()

        SQLCmd = New SqlCommand(query, SQLCon)

        SQLDA = New SqlDataAdapter(SQLCmd)
        SQLDataset = New DataSet()
        SQLDA.Fill(SQLDataset)

        'READ DIRECTLY FROM DATABASE
        Dim R As SqlDataReader = SQLCmd.ExecuteReader

        While R.Read
            time.add(R(0).ToString)
            operations.add(R(1).ToString)
        End While

        SQLCon.Close()

    Catch ex As Exception
        MsgBox(ex.Message)

        If SQLCon.State = ConnectionState.Open Then
            SQLCon.Close()
        End If
    End Try

End Sub

要在dataGridView中显示我已经使用过：

  For i = 0 To operations.count - 1
        dataGridView1.Rows.Add(time(i), operations(i))
    Next

当我在dataGridView中显示时，操作列中的某些项目为空白。实施例

Time  |  Operations
11 feb|operations1=2................
11 feb|operations1=7................
12 jan|operations1=5................
13 jan|
14 jan|operations1=5................
20 jan|operations1=5................

如果我尝试在Msgbox中显示相关项目，操作（索引），我可以看到值，但在datagridview中我不能。你能帮我吗？谢谢

vb.net sql server查询，无法在dataGridView中看到所有结果

0 个答案: