在vs2010 vb.net中获取sql语句的结果

Question

我正在做一个sql语句来获取数据库中所有以“A”开头的数据。

Sub searchMap()
    Dim connectionString As String = ConfigurationManager.ConnectionStrings("WeddingPerfectionConnectionString").ConnectionString
    Dim connection As SqlConnection = New SqlConnection(connectionString)
    connection.Open()
    Dim sql As String = "SELECT LocationName FROM MapSearch WHERE LocationName=" Like ("1%")
    Dim command As SqlCommand = New SqlCommand(sql, connection)
    Dim reader As SqlDataReader = command.ExecuteReader()
    Dim customerId As Integer
    If (reader.Read()) Then
        customerId = reader.GetValue(0)
    End If
    reader.Close()
End Sub

我想得到结果并将其显示在标签中。

我该怎么做呢？

Answer 1

在 SQL-Server 中：

Dim sql As String = "SELECT LocationID, LocationName FROM MapSearch WHERE LocationName LIKE 'A%'"

LIKE (Transact-SQL)