query about datareader object

 Hello,

 

 

http://stackoverflow.com/questions/2655978/is-closing-disposing-an-sqldatareader-needed-if-you-are-already-closing-the-sqlc 

Using statement is an awesome tool to close and dispose objects of classes that implement IDisposable that helps to reduce coding effort and possible issues. Safe side is warrped SqlDataReader object in a Using Statement . If it's in a using block, then it is automatically closed. You do not need to explicitly close it.

 

You should always call the Close method when you have finished using the DataReader Object.Closing a SqlConnection should destroy any resources that the SqlDataReader is using. 

Following are some links that will help you to know better:

Need of sqldatareader-dispose 

Is closing/disposing an SqlDataReader needed if you are already closing the SqlConnection? 

Dispose SqlDataReader 

Hi sir,

 

Refer the below link,

 

1.https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqldatareader.close%28v=vs.110%29.aspx

 

 

If it is useful then kindly accept my answer

 

Karthikeyan K

Hi,

 

Remarks

You must explicitly call the Close method when you are through using the SqlDataReader to use the associated SqlConnection for any other purpose.

The Close method fills in the values for output parameters, return values and RecordsAffected, increasing the time that it takes to close a SqlDataReader that was used to process a large or complex query. When the return values and the number of records affected by a query are not significant, the time that it takes to close the SqlDataReader can be reduced by calling the Cancel method of the associated SqlCommand object before calling the Close method.

Do not call Close or Dispose on a Connection, a DataReader, or any other managed object in the Finalize method of your class. In a finalizer, you should only release unmanaged resources that your class owns directly. If your class does not own any unmanaged resources, do not include a Finalize method in your class definition. For more information, see Garbage Collection.