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
259 views
in Technique[技术] by (71.8m points)

c# - In-Out Parameter for SqlCommand

I have the following parameter for SqlCommand. How do I make it to both in and out the paramter value for the Stored Procedure.

 SqlCommand mySqlCommand = new SqlCommand("aspInsertZipCode", mySqlConnection);
 mySqlCommand.CommandType = CommandType.StoredProcedure;
 mySqlCommand.Parameters.Add("@DataRows", dataStringToProcess.ToString());
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)
var pInOut = mySqlCommand.Parameters.Add("@DataRows", dataStringToProcess.ToString());
pInOut.Direction = ParameterDirection.InputOutput;

And then to read the output value after you've executed the command:

// assumes that the parameter is a string and that it could possibly be null
string value = Convert.IsDBNull(pInOut.Value) ? null : (string)pInOut.Value;

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

...