Asp.net 尝试执行Sql命令时出错

试图在我的vb.net页面中执行命令时，DataReader引发错误消息 代码抛出错误为：

Dim connectionString As String
Dim connection As SqlConnection
Dim sql As String

connectionString = \\\connection string\\\
connection = New SqlConnection(connectionString)

sql = "select * from jb_jobs where city='Los Angeles' "
connection.Open()
Dim reader As SqlDataReader = sql.ExecuteReader()

错误是： “ExecuteReader”不是“string”的成员 如何解决此问题？

添加此项

connection.Open()
Dim cmd as new SqlCommand(sql,connection )      
Dim reader As SqlDataReader = cmd.ExecuteReader()

加上这个

connection.Open()
Dim cmd as new SqlCommand(sql,connection )      
Dim reader As SqlDataReader = cmd.ExecuteReader()

尝试添加以下内容：

sql = "select * from jb_jobs where city='Los Angeles' ";
    var sqlCommand = new SqlCommand(sql, connection);
    sqlCommand.Connection.Open();
    var reader = sqlCommand.ExecuteReader();

尝试添加以下内容：

sql = "select * from jb_jobs where city='Los Angeles' ";
    var sqlCommand = new SqlCommand(sql, connection);
    sqlCommand.Connection.Open();
    var reader = sqlCommand.ExecuteReader();

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sql不是SqlCommand。您需要创建sqlcommand。您可能希望查看sqlcommand对象。sql不是sqlcommand。您需要创建sqlcommand。您可能希望查看sqlcommand对象。需要文本，而不是连接。需要文本，而不是连接。此vb.net您使用c#此vb.net您使用c#