I want to do execute a LINQ query, and I have the name of the table to query stored in a variable:
string tableName = "SomeTable";
DataContext db = new DataContext();
var vResult = from t in db.tableName where t.Id = ....
I am trying to execute a stored procedure in LINQ. When run in SQL Server it returns several fields, mostly integer and float fields. But when I call the stored procedure in LINQ, all it returns is 0. Here is how I am calling the stored procedure :
[Code]....
And here is the stored procedure :
[Code]....
Is it possible to save execute stored proc command in a string variable and then execute string variable?
Does this logic fits into LINQ2SQL? Why I want to do this - INstead of passing user control references to server, I want to save user control values to string in client side java script and then pass string to server to do actual stored proc execution. Hopefully this will improve performance.
In my app I am using the open xml sdk to generate a word document and write the file to the response.output stream for the user to download.
At the time that the letter is generated I also need to call a SP via linq data context to update a row in my db.
I think that I need to execute this SP in a seperate thread so that I can simultaneouly write the file to the output. my method looks like this...
protected void btnPrint_Click(object sender, EventArge e)
{
//call sp to update
//create letter and send to client
}
Is this feasible or should I avoid seperate threads?
I am getting frustrated with this problem, I dont know what i did, but now I cannot execute any stored procedured when I could last time.When I use my asp.net application to run the query, it finds the stored procedure but when I execute it is sql management studio it says it cannot find the stored procedure even though it is there.I tried to execute other procedures and the samething happens. Even when I try a simple query it says it cannot find the tableI could execute the query if i placed Use [databasename] in front, but even with this, I cannot execute stored procedures.
View 12 RepliesI am having a meltdown over something that seems so simple and yet isn't working. Here's my scenario.
I have an object structure of tEvents, which contains properties of an event like a run of concerts. tEvents in turn contains an entity set of tEventOptions, which include properties like EventDate, Cancelled etc. I would like to query a list of tEvents using properties of the tEventOptions, for example filtering by date.
My pageis using a calendar object to show event dates. So I am trying to find if any tEvents in the List coming back from the database match the date of the day element being rendered in my Calendar control like so (in this snip 'data' is List and results from a db query):
[code]....
Except r, my query result var, is always true no matter what data it receives. I have tried the sub query using other properties of tEventOption and get the same 'true' result each time. I know that the data does not reflect this result so I clearly have a problem with the structure of my query, but for the life of me I cannot find a way to resolve it.
There is a table contains thousands of records. when I run this query:
[Code]....
The application stucks...it takes too much time to execute this query...
What might be the reason for that?
basically i have two dropdown boxes to filter data and textbox with stored procedure bound to gridview.i want to be able to query data depending on the selected value passed,either using one or more parameter values.
i would like seperate sqlcommands to chose from depending on which controls i select to pass parameters.
i have included a parameter Select(control id) as this is declared by the wizard for stored procedure.
but i am not sure how it is defined on the page and passed to procedure.
[Code]....
As the title sugests, I am missing a (basic?) concept as I teach myself asp.net, linq, and C#. It has been awhile since I've done anything object oriented, so I don't know how much that is impacting this gap in my understanding. Anyhow, here is what I am trying to do. I have three SQL Server tables: PERSON, POSITION, AREA. There is a 1 to many relationship between PERSON and POSITION, and a 1 to 1 relationship between POSITION and AREA. Given the following code I verify who the person is who has logged into the browser:
[Code]....
I want to be able to return all of the AREAs the person is able to access, based on the position they currently hold. I am able to easily do this in a SQL Server query, and I am sure I can do this with a SQL stored procedure once I pass the EMPLOYEE_ID to the procedure. However, I would rather do this in the page_load event, and load the returned results into gridview1 for the viewer. The issue I am running into is in building the LINQ query. When I try to build it, I can only get access to two of the three tables, depending on which table I select with db. Is it possible to access all three tables in the same query?
I am a little new to this concept so bear with me.1) I need to query atleast 35 tables using linq to sql(SQL server database) . I am not able to add all the database entities in Linq to sql classes?
2)(View Model issue) When I use List<Reportcollection> and also List<Receipt> to convert the result then its giving an error that "Cannot convert list<anonymous> to list<string>"
how can I display a linq query in a gridview that has data from multiple tables AND allow the user to edit some of the fields or delete the data from a single table?
I'd like to do this with either a linqdatasource or a linq query. I'm aware I can set the e.Result to the query on the selecting event. I've also been able to build a custom databound control for displaying the linq relations (parent.child).
However, I'm not sure how I can make this work with delete? I'm thinking I may need to handle the delete event with custom code.
can get two tables in only one query with LINQ to Entities
Code for example:
[Code]....
[Code]....
say i have the code above which adds a single row to a list how would i add all the information in a linq query or a var to the list?
I am looking through a sql stored procedure which I might need to update in the near future. Basically the stored procedure is about 20 lines long. The stored procedure first builds a query
and stores it in a variable named "@Sql". And then for the last two lines of the stored procedure it appears that the big sql statement stored in "@Sql" is executed by using the "EXEC" command. See below. What is confusing though is that the query appears to be exectuted twice? Why was the query written in this way. Don't both lines do the same thing? Why is it being done twice? Could this possibly be a mistake on the
part of the person who wrote the query. Below are the two lines I am talking about?
EXEC sp_executesql @sql
EXEC (@sql)
I'm looking to translate an SQL query into linq
INNER JOIN Usrs ON
SAQ.UserId =
Usrs.UserId AND Scan.UserId =
Users.UserId
I'm not sure how to include the "AND" in the LINQ statement.
A follow up question concerning the DAL layer part .. The first question about dealing with large objectsI have one table (PlacesTable) that is connected by like 6 other tables (1:Many and Many:Many relations)
In my DAL should I put a big query that join the 6 tables + the m:m reference tables (btw it produces multiple data that I don't need Please refer to my old question) and place all the data in it's specific object property or, should I use a single query for each table and create an object for each fetched table .. and finally send those to the UI ?If I wasn't clear enough please let me know what I further information do you need to know!
I could probably figure this out if I tried to, but I have been working so long on code, I'm a little fried
I have a stored procedure, and I want to execute another stored procedure during a time period of lets say 1/1/2011 to 12/31/2011
How Would I accomplish this?
I am trying to use a variable from the code-behind page in a sqlDataSource WHERE statement. I am using Membership.GetUser().ProviderUserKey to obtain the UserId of the logged in user and I would like to only show record that have this UserId as a foreign key. How can I write the SQL for this?
Here is what I have so far:
SQL Query:
SelectCommand="SELECT [UserID], [CarID], [Make], [Model], [Year] FROM [Vehicle]"
Code-Behind
String user2 = ((Guid)Membership.GetUser().ProviderUserKey).ToString();
And I want to add WHERE UserID = user2 to the SQL Query.
Does anybody if it is possible that a stored procedure returns rows which is the result of the execution of another sp? Something like..
[Code]....
Can I execute 2 store procedures in one asp page? I copied my code here, it doesn't give me an error but the second store procedure is not executing.
using (SqlConnection connection = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]))
{
SqlCommand cmd = new SqlCommand("Sp_createOrder", connection);
cmd.CommandType = CommandType.StoredProcedure;
connection.Open();
//input parameters for the 1st stored procedure
cmd.Parameters.AddWithValue("@in_order_class", "WEB");
cmd.Parameters.AddWithValue("@in_owner_code", "OP");
cmd.Parameters.AddWithValue("@in_sales_campaign_code", "DEF");
cmd.Parameters.AddWithValue("@in_cus_key", null);
cmd.Parameters.AddWithValue("@in_lab_key", null);
cmd.Parameters.AddWithValue("@in_invoice_number", null);
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
SqlDataReader rdr = null;
rdr = cmd.ExecuteReader();
int ChargeFine=0;
//this write the return value on the screen
while (rdr.Read())
{
Label5.Text="<strong>Order Key:</strong> ";
Label1.Text = rdr["ord_key"].ToString();
ChargeFine = Convert.ToInt32(rdr["ord_key"].ToString());
Label6.Text="<strong> Order Invoice Number:</strong>";
Label2.Text = rdr["ord_invoice_number"].ToString();
Label7.Text="<strong> Via Ship Via Code:</strong>";
Label3.Text = rdr["via_ship_via_code"].ToString();
Label8.Text=" <strong> Order Ship After Date:</strong>";
Label4.Text = rdr["ord_ship_after_date"].ToString();
}
//executing the second stored procedure
SqlCommand cmd2 = new SqlCommand("Sp_createitem", connection);
cmd2.CommandType = CommandType.StoredProcedure;
//input parameters
cmd2.Parameters.AddWithValue("@in_ord_key", ChargeFine);
cmd2.Parameters.AddWithValue("@in_long_item_number", "AC00107");
cmd2.Parameters.AddWithValue("@in_quantity_requested", 1);
cmd2.Parameters.AddWithValue("@in_price_override", null);
cmd2.Parameters.AddWithValue("@in_shipment_type", null);
cmd2.Parameters.AddWithValue("@in_size", null);
cmd2.Parameters.AddWithValue("@in_color", null);
cmd2.Parameters.AddWithValue("@in_subscription_issues", null);
cmd2.Parameters.AddWithValue("@in_sub_start_date", "");
cmd2.Parameters.AddWithValue("@in_sub_to_renew", "");
cmd2.Parameters.AddWithValue("@in_lab_key", "");
cmd2.Parameters.AddWithValue("@in_ship_via", "");
cmd2.Parameters.AddWithValue("@in_ship_after_date", "");
cmd2.Parameters.AddWithValue("@in_edi_sku_ID", "");
cmd2.Parameters.AddWithValue("@in_edi_style_ID", "");
cmd2.Parameters.AddWithValue("@in_edi_size_ID", "");
cmd2.Parameters.AddWithValue("@in_edi_color_ID", "");
cmd2.Parameters.AddWithValue("@in_check_item_for_duplicates", "");
connection.Close();
I have a stored procedure in SQL server 2000. It is a simple select query and returns a list of account names. However, when I try to execute the stored procedure, it automatically declare @return_value as int and return this int as shown below:
DECLARE @return_value int
EXEC @return_value = [dbo].[p_getAccountNameListByPrefix]
@prefixText = N'br',
@count = 40
SELECT 'Return Value' = @return_value
How can I make the stored procedure return the list of account names as expected?
I want to use "if statement" in Linq query. How can I do this situation?
For example:
if txtAge.Text=="", I will not use that in Linq Query.
else txtAge.Text!="", I will use that in Linq Query.
I've build a linq query.But i want a random selection so its not always ID : 1,2,3,4,5,6 How can i randomize this var? I like to bind it to a repeater.//TagCloud:
Random rand = new Random();
var tc1 = from i in JumpTide.cms.menu.GetMenuItems(32)
select new
[code]...
DECLARE
CUR_EMP_BIR REF CURSOR;
BEGIN
dbname.EMPLOYEE_P.EMPLOYEEBIRTHDAYSEL ( CUR_EMP_BIR );
END;
ORA-06550: line 2, column 19:
PLS-00201: identifier 'CURSOR' must be declared
ORA-06550: line 2, column 15:
PL/SQL: Item ignored
ORA-06550: line 5, column 45:
PLS-00320: the declaration of the type of this expression is incomplete or malformed
ORA-06550: line 5, column 3:
PL/SQL: Statement ignored
[code]...
how to lock a stored procedure..
if its lock how to open and execute that stored procedure..