C＃重新使用SQLCommand

Question

How do I reuse a SQLCommand for say multiple queries?

eg

SqlCommand mycommand = new SqlCommand("SElect * from BKLAH", myConnection);
mycommand.ExecuteNonQuery();

Now I want to use mycommand again but use a different SQL query. How would I do this?

Answer 1

您可以设置命令的CommandText属性，如下所示：

mycommand.CommandText = @"UPDATE BKLAH SET a = 5 WHERE id=@id";

Answer 2

I would use it in a USING section.

Command 1:

using (SqlCommand mycommand = new SqlCommand("SElect * from BKLAH", myConnection))
{
mycommand.ExecuteNonQuery();
}

Command 2:

using (SqlCommand mycommand = new SqlCommand("SElect * from BKLAH2", myConnection))
{
mycommand.ExecuteNonQuery();
}