StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POTrying to load a DataSet, but it is always null. Regular sqlReader.GetValue() is not
primarykey
Id
3256562
data
AcceptedAnswerId
3256614
AnswerCount
5
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2010-07-15T14:32:09.893
FavoriteCount
0
LastActivityDate
2011-09-27T14:20:58.767
LastEditDate
LastEditorUserId
0
OwnerUserId
17803
ParentId
0
PostTypeId
1
Score
0
ViewCount
2342
LastEditorDisplayName
text
Body
I don't use DataSets much. Usually find myself using an ORM or just a basic sqlReader.Read() followed by some GetValues(). I'm working on some legacy code that has DataSets all over the place, and while fixing a bug was trying to DRY some of it up. However, I can't seem to actually get the data loaded into a non-typed DataSet. <pre><code>public static DataSet ExecuteStoredProcedure(string storedProcedure, DBEnum db, IEnumerable<SqlParameter> parameters) { DataSet result = new DataSet(); using (SqlConnection connection = SqlHelper.GetSqlConnection(db)) { SqlCommand command = connection.CreateCommand(); command.CommandType = CommandType.StoredProcedure; command.CommandText = storedProcedure; if (parameters != null) foreach (SqlParameter parameter in parameters) command.Parameters.Add(parameter); connection.Open(); DataTable table = new DataTable(); using (SqlDataReader reader = command.ExecuteReader()) { table.Load(reader); } result = table.DataSet; // table.DataSet is always empty! } return result; } </code></pre> I assumed table.Load(reader) does all the necessary reader.Read() calls ... but I went ahead and tried it both with and without reader.Read() before the table.Load(), to no avail. I know that the stored procedure being called is actually returning data. If I do something like this, I see the data just fine: <pre><code>using(SqlDataReader reader = command.ExecuteReader()) { reader.Read(); object test = reader.GetValue(0); // returns the expected value } </code></pre> Seems like I'm missing something simple here, but I've been scratching my head over this one for a while now. This is in .NET 3.5.
Tags
<c#><.net-3.5><dataset>
Title
Trying to load a DataSet, but it is always null. Regular sqlReader.GetValue() is not
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USMatt
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
3. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.