本文整理汇总了VB.NET中System.Data.SqlClient.SqlCommand.ExecuteReader方法的典型用法代码示例。如果您正苦于以下问题：VB.NET SqlCommand.ExecuteReader方法的具体用法？VB.NET SqlCommand.ExecuteReader怎么用？VB.NET SqlCommand.ExecuteReader使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Data.SqlClient.SqlCommand的用法示例。
在下文中一共展示了SqlCommand.ExecuteReader方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: CreateCommand
Public Sub CreateCommand(ByVal queryString As String, _
ByVal connectionString As String)
Using connection As New SqlConnection(connectionString)
connection.Open()
Dim command As New SqlCommand(queryString, connection)
Dim reader As SqlDataReader = command.ExecuteReader()
While reader.Read()
Console.WriteLine("{0}", reader(0))
End While
End Using
End Sub示例2: CreateCommand
Public Sub CreateCommand(ByVal queryString As String, _
ByVal connectionString As String)
Using connection As New SqlConnection(connectionString)
Dim command As New SqlCommand(queryString, connection)
connection.Open()
Dim reader As SqlDataReader = _
command.ExecuteReader(CommandBehavior.CloseConnection)
While reader.Read()
Console.WriteLine("{0}", reader(0))
End While
End Using
End Sub示例3: SqlCommand.ExecuteReader()
' 导入命名空间
Imports System
Imports System.Data
Imports System.Data.SqlClient
public class MainClass
Shared Sub Main()
Dim SqlConnection1 As New SqlConnection("server=(local)\SQLEXPRESS;" & _
"integrated security=sspi;database=MyDatabase")
Dim thisCommand As SqlCommand = SqlConnection1.CreateCommand()
thisCommand.CommandText = "Select * from Employee"
Try
SqlConnection1.Open()
Dim thisReader As SqlDataReader = thisCommand.ExecuteReader()
Dim str As String = thisReader.GetValue(20).ToString()
thisReader.Close()
Catch ex As System.InvalidOperationException
Dim str As String
str = "Source : " & ex.Source
str &= ControlChars.NewLine
str &= "Exception Message : " & ex.Message
str &= ControlChars.NewLine
str &= "Stack Trace : " & ex.StackTrace
Console.WriteLine("Specific Exception:" & str)
Catch ex As System.Data.SqlClient.SqlException
Dim str As String
str = "Source : " & ex.Source
str &= ControlChars.NewLine
str &= "Exception Message : " & ex.Message
Console.WriteLine("Database Exception" & str)
Catch ex As System.Exception
Dim str As String
str = "Source : " & ex.Source
str &= ControlChars.NewLine
str &= "Exception Message : " & ex.Message
Console.WriteLine("Generic Exception" & str )
Finally
If SqlConnection1.State = ConnectionState.Open Then
Console.WriteLine("Finally block closing the connection")
SqlConnection1.Close()
End If
End Try
End Sub
End Class