I am Developing A Application . I want to develop this Application with Linq and used Stored proc in linq Plz give me Some suggestion How we used And If You Have Some Related Topic
View 1 RepliesI have made a simple stored proc which include Transaction through which I have to delete records from two tables EmpDetail and EmpDept . EmployeeId is PK in EmpDetail and FK in EmpDept. Procedure has been executed but on doing exec DelEmployee @EmployeeID='e07' showing 0 rows affected..
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I've been self teaching SQL and asp.net and i'm a little stuck. I have a stored proc for the insert and then in my Insert inside my class it's not returning the ID after the insert as I am receiving an error message that NULL value has cannot be inserted. I want to add default values to a seperate table after the insert. I will provide my code below, if anyone can help me why the value is not going across?
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i have one table and structure of table is like.Now i need to fetch the Resturant Name and status of Resturant ( whether it is closed or open by comparing the opening time and closingTime with currentTime).
View 6 RepliesThis is the sproc
ALTER Procedure [dbo].[spGetGroupDetails]
(
@inUserID Varchar(15),
@inGroupID numeric=0,
@inGroupName varchar(100) = null
)
As
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can i set the table name in stored proc at runtime ..
sp_MyStoredProc
@Tablename varchar(25)
AS
BEGIN
like select * from @Tablename
END
is it possible...
I have a recordset in a gridview that comes from an outer joint that creates null values in the recordsetWhen I write to the database using stored proc defined in datasource I get dbnull error.I'm trying to process the onDeleting event in the code behind but don't know what to write or if that's the best wayI need to call a stored proc and if the last parameters value is null then the stored proc does one thing, if it's no null it does something else.However DBNull doesn't ssem to be working.
View 1 RepliesTrying to pass in my DataTable to a stored proc using LINQ. Below is my code.
var sqlCommand = new System.Data.SqlClient.SqlCommand {
CommandType = System.Data.CommandType.StoredProcedure,
CommandText = "UserIdList"
};
var dataTable = new System.Data.DataTable("IdList");
dataTable.Columns.Add("AttributeIds", typeof(Int32));
dataTable.Rows.Add(26);
dataTable.Rows.Add(40);
dataTable.Rows.Add(41);
dataTable.Rows.Add(45);
dataTable.Rows.Add(78);
dataTable.Rows.Add(33);
dataTable.Rows.Add(36);
//The parameter for the SP must be of SqlDbType.Structured
var parameter = new System.Data.SqlClient.SqlParameter {
ParameterName = "@AttributeIds",
SqlDbType = System.Data.SqlDbType.Structured,
TypeName = "ecs.IDList",
Value = dataTable,
};
sqlCommand.Parameters.Add(parameter);
var user = myDC.DC.ExecuteQuery("exec ecs.udpUserAttributeDetails {0}, {1}", sqlCommand, userId).SingleOrDefault();
lets say i have check box list like that
Cairo
Alex
Aswan
All
each of them is a check box inside this check box list and i have a stored proc that takes paramter which is the name of the city and gives me a data according to the name of the city (Filter). i wana know if i checkec more that one city how can i pass this to the stored proc eg if i checked on cairo and alex what can i do to make the filter looks like this where city Like 'Cairo' and City Like 'Alex' My Stored Proc takes @City Parameter like this Create Proc xx(@City varchar(2)) how can i pass the 2 cities 2 the stored proc
i have two stored procs. when th 1st stored proc runs i want to be able to use this value returned from the stored into another stored proc.
my first stored proc is:
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which returns [Transfer_stations_Authority_name] = 'Blackpool'
now i want to use this value into my second stored proc@
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Im new to ASP.NET (Normally use PHP), and im currently designing a website in VB.NET and SQL Server.
When using LINQ to SQL i know that it uses parametarized queries and we dont need to add them.
So do we need to use Stored Procedures in LINQ (for security reasons)???, If yes How
I have created one stored Procedure as
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I am not getting the result with extra column c.I am not getting what is the Problem.In sql server,It's working fine.
Is it posible to run a stored procedure using linq? I dont mean one that returns a table i just mean one that runs a set of transactions exec sp_MyProc @Var or something?
View 1 RepliesIve created a new LINQ To SQL class and dragged several tables across from my server, in my code I access them like this
[Code]....this is all ok, however, I have several stored procedures that I want to use as well, but when I drag the stored procedures across I get a compilatiopn error
Error 60 'DB_BL.DB_BLDataContext': type used in a using statement must be implicitly convertible to 'System.IDisposable'
how do I use stored procedures from LINQ with a using clause ?
If this is not the appropriate forum for this I didn't see any linq specific forum listed.
I am about to start a new project and I would like to use it as an opportunity to update myself with the newer technologies, like ajax and linq.
All my database CRUD operations will be done by sql stored procedures, does linq still make sense when doing that? I watched a couple introductory videos on linq and none of them dealt with stored procedures, thats why I'm wondering.
I like to use my own stored procs as much as possible.
That way I know exactly what's happening and I can explain and control things.
I'm using stored procs with LINQ to SQL for CRUD operations.
For select, insert and delete - using stored procs with LINQ to SQL is pretty straightforward.
However, if I want to use my own custom stored procs with L2S for updates what's the best way to accomplish this?
Can you provide some code that shows the best approach that you would personally choose for this?
I am having problems returning a string value through a stored procedure/linq to a label. Everything works fine if I return an integer value but I cant get a string value to bind to a label. I get the error message
Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value,
NumberFormatInfo NumberFormat) +201
Microsoft.VisualBasic.CompilerServices.Conversions.ToInteger(String Value) +66
[InvalidCastException: String "System.Data.Linq.SqlClient.SqlPr" to 'Integer' is invalid‚]
This is the stored procedure
ALTER PROCEDURE test
AS
Select ProductName
From Products
This is the vb page
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim db As New DataClassesDataContext
Dim product As Integer = db.test.ToString
Label1.Text = product
End Sub
This is the aspx page
<form id="form1" runat="server">
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>
</form>
I have an application where depending on what the user selects run a different stored procedure.
I am using LINQ and am passing the stored procedure name into a sub that will run the stored procedure and return values that I am loading into a DDL.
For example I want to pass the procedure name "GetProducts_Hats" to the sub and not hardcode it.
Protected Sub LoadParamDropDowns(
ByVal SqlObjToExec
As
String )
I am passing the storedprocedure name in parameter SqlObjToExec
so instead of
values = mydb.GetProducts_Hats
I want to code it to be a variable
values = mydb.SqlObjToExec
But the above code does not work.
I have been chasing this erorr all day and coming up blank. I created a stored proceudre(fairly complicated logic), added it to the context, and set the return type to a specific entity type.
It generated this:
[Function(Name="dbo.usp_ServiceTemplateSelectByFkID")]
public ISingleResult<ServiceTemplate> usp_ServiceTemplateSelectByFkID([Parameter(Name="FkId", DbType="Int")] System.Nullable<int> FkId)
{
IExecuteResult result = this.ExecuteMethodCall(this, ((MethodInfo)(MethodInfo.GetCurrentMethod())), FkId);
return ((ISingleResult<ServiceTemplate>)(result.ReturnValue));
}
I call it from my service with the following method:
public ISingleResult<ServiceTemplate> GetByFkId(int FkId)
{
return Db.usp_ServiceTemplateSelectByFkId(FkId);
}
I have tested the stored procedure and it returns the results I want. When I make the service call from the controller, it doesn't error out, however, it should return 4 records in this instance and instead, it returns the same 4 records (repeating the first record 4 times).
In addition, in my controller code, I am using the MVCContrib ToPagedList() method which doesn't appear to work with the ISingleResult interface (forward only cursor, I'm guessing). I have attempted converting the service results to IQuery, List, and Array, however, I still have the problem with the first record being repeated 4 times.
I can return single integer values when using stored procedures with Linq but I cant get single string values returned.
View 2 RepliesI started learning LINQ, So i thought of just creating gridview with sorting and paging using objectdatasource using LINQ. So i got this link
[URL] which Brian Orrel tell us how to do using IQueryable Interface. but i have nearly 300 lines of stored procedure which joins nearly 20 tables. so i thought of creating a stored procedure and using that instead of IQuerytable.
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is it good for desktop application (WCF) or web application.I am little confuse about LINQ functionalities i have read some articles which are discourage LINQ (due to poor performance) for web applica
View 3 RepliesMy function isn't returning anything - strReturn is empty:
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When I execute this stored proc using 'exec GetMerchantLocationZip (3333, 373773)' I get the correct zipcode in SQL. Why don't I get it in Visual Studio?
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I am learning, so apologies if it's a obvious error.
I am attempting to execute a stored proc in asp.net in the code behind. The parameter I am trying to pass is strErrorMessage that contains a value of "The transport failed to connect to the server.; ". The error message when the query gets executed is: The incoming tabular data stream (TDS) remote procedure call (RPC) protocol stream is incorrect. Parameter 1 ("@errMessage"): Data type 0xE7 has an invalid data length or metadata length. Update with code
try
{
...
...
...
}
catch (Exception ex)
{
ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Email was not sent - " + ex.Message + "');", true);
string strMessage = ex.Message;
string strStackTrace = ex.StackTrace;
strMessage = strMessage.Replace("
", "; ");
strMessage = strMessage.Replace(" ", "");
strStackTrace = strStackTrace.Replace("
", "; ");
strStackTrace = strStackTrace.Replace(" ", "");
AppErrorLog(strMessage, strStackTrace);
return false;
}
protected void AppErrorLog(string strErrorMessage, string strErrorStackTrace)
{
SqlConnection conErrLog = new SqlConnection(strConn);
string sql = "usp_AppErrorLog_AddRecord";
SqlCommand cmdErrLog = new SqlCommand(sql, conErrLog);
conErrLog.Open();
try
{
cmdErrLog.CommandType = CommandType.StoredProcedure;
cmdErrLog.Parameters.Add(new SqlParameter("@errMessage", SqlDbType.NVarChar, 8000));
cmdErrLog.Parameters["@errMessage"].Value = strErrorMessage;
cmdErrLog.Parameters.Add(new SqlParameter("@errStackTrace", SqlDbType.NVarChar, 8000));
cmdErrLog.Parameters["@errStackTrace"].Value = strErrorStackTrace;
cmdErrLog.Parameters.Add(new SqlParameter("@userID", SqlDbType.VarChar, 12));
cmdErrLog.Parameters["@userID"].Value = User.Identity.Name;
SqlDataAdapter ada = new SqlDataAdapter(cmdErrLog);
cmdErrLog.ExecuteNonQuery();
}
catch(Exception e)
{
ClientScript.RegisterStartupScript(GetType(), "alert", "alert('AppErrorLog - " + e.Message + "');", true);
}
finally
{
conErrLog.Close();
}
}
The column datatype in the table is nvarchar(MAX).
i have the following stored proc that inserts data into a database based on a stauts field. the first stored proc inserts into the first table and i am trying to get the identity field out as i need this value for the next stored proc. the first stored proc works fine and inserts the data but the secnd one doesnt, even though there is data there.
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