Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
211 views
in Technique[技术] by (71.8m points)

c# - How to use OdbcParameter for MySQL?

How to use OdbcParameter for MySQL?

This is my current attempt:

command.Parameters.Add(new OdbcParameter("@username", username.Text));
command.Parameters.Add(new OdbcParameter("@password", password.Text));
command.CommandText = "INSERT INTO test.test (`user`,`password`) VALUES (@username,@password);";
command.ExecuteNonQuery();

but it seems to be not working. The database does create a new row, but it's values are NULL.

This works: (but I really need the parameters for other stuff)

command.CommandText = "INSERT INTO test.test (`user`,`password`) VALUES (`" + username.Text + "`,`" + password.Text + "`);";
command.ExecuteNonQuery();

What am I doing wrong?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Change your CommandText to be a valid one for OdbcCommand:

command.CommandText = "INSERT INTO test.test (`user`,`password`) VALUES (? , ?);";

Instead of the parameter name as @paramname, it takes a ? in the CommandText - leave the name in the actual parameters.

See this blog post for an example.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...