.net - Will Sqldatareader With Using Statement Ever Return An Output Parameter

Aug 21, 2011

Here's a simple code snippet of a larger function as an example.

Using conn as New SqlConnection("conn string")
Using find as new SqlCommand("ExampleProc",conn)
Dim rParam as new SqlParameter("@RESULT",SqlDbType.Int)

[code]....

I know the Output parameter is returned after the SqlDataReader is closed. From what I think I know, the Using statement will call .Dispose on the SqlDataReader, so will that basically wipe out the Output parameter? If so, what is the best method to call a SqlDataReader that also contains Output parameters that closes and disposes everything correctly? Let me add that based on what I've read you only have access to the Output parameter using a SqlDataReader after you call .Close on the SqlDataReader.

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Sql - Return A Value To A Sqldatareader If Value Is Null?

Oct 3, 2009

I am currently using a sql data reader (in vb.net) to extract an article object via a stored proc from a SQL Server 2008 database. Part of this object includes the two properties shown below:

theArticle.Truthfulness = ((myReader.GetInt32(myReader.GetOrdinal("Truthfulness"))))
theArticle.Relevance = ((myReader.GetInt32(myReader.GetOrdinal("Relevance"))))

My problem is that the Truthfulness and Relevance may return a null value and this is causing the function to fall over.I think I understand why. I am asking for an integer value (getin32) and because null is returned it fails.How do I accommodate the null value from the database so it does not fall over?

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C# - What 'length' Parameter Should I Pass To SqlDataReader.GetBytes()?

Feb 7, 2011

I have a SqlDataReader and need to read a varbinary(max) column from it using the SqlDataReader.GetBytes() method. This method populates a byte array and therefore needs to know what length of data to read.This is where I get confused.. Clearly I want to read all the data that has been returned from the database in this row/column so what 'length' parameter should I pass?As far as I can see, the SqlDataReader doesn't provide any methods to discover what length of data is available, therefore this method seems fairly awkward to me.I'm tempted to just pass int.MaxValue here and forget about the issue but something about this doesn't sit right with me.

I am aware that I can instead call

byte[] value = (byte[])dataReader["columnName"];

.. and this seems to completely take care of the length issue internally. However I am working with a set of complicated code generation templates that have been built around the SqlDataReader.GetXXXX() methods. So I am tied into using GetBytes and need to understand its proper usage.

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C# - What 'length' Parameter Should Pass To SqlDataReader.GetBytes()

Jun 21, 2012

I have a SqlDataReader and need to read a varbinary(max) column from it using the SqlDataReader.GetBytes() method. This method populates a byte array and therefore needs to know what length of data to read.This is where I get confused.. Clearly I want to read all the data that has been returned from the database in this row/column so what 'length' parameter should I pass?As far as I can see, the SqlDataReader doesn't provide any methods to discover what length of data is available, therefore this method seems fairly awkward to me.I'm tempted to just pass int.MaxValue here and forget about the issue but something about this doesn't sit right with me.

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Call The Stored Procedure Which Has One Input Parameter And One Output Parameter?

Mar 21, 2009

I'm Trying to Call the Stored Procedure which has one input Parameter and one output parameter . VB.net code is below

[Code].....

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Return Statement Which Is True In An If Statement?

May 24, 2012

Return statement which is true in an if statement

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Asp.net - Get Output Parameter Of Sql In Codebehind?

Aug 21, 2009

My stored procedure is like this.

ALTER PROCEDURE [dbo].[GetImagesByDesignId]
@DesignID bigint,
@RegID bigint,

[code]....

Problem is i want to get datattable as well as imagecount in codebehind.How can i return back datatable and imagecount to codebehind.

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Asp.net - Using Output Parameter In SqlDataSource?

Nov 15, 2011

I am retrieving the scope_identity of a db entry, and I want to use that variable in a different SqlDataSource, primarily as an but I am unable to access the variable.I have the variable being displayed in a msgbox, and it is displaying properly, I am just unsure how to access it in the SqlDataSource. Here is my code;This is the datasource that inserts the first information and received the scope_identity, as well as the _inserted event;
Code:

<asp:SqlDataSource ID="InsertPatientInfo" runat="server" ConnectionString="<%$ ConnectionStrings:DataConnectionString %>"
providername="<%$ ConnectionStrings:DataConnectionString.ProviderName %>"[code]....

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Asp.net - Output Parameter Used To Insert A Row In Same Table?

Jun 13, 2012

I am working on a Asp.net based project and my requiremnent is to generate a PARTNO with the combination of MaterialType+ProductID and - 4digit random number?

NOTE: ProductID is Primary key and also set it to output parameter for example If material type is 500 and product ID generated 55 and random no generated 5434, then part no become 555-5434 how could I store partno in same table, I am somewhat trying like that

Connection.Open()
Dim trn As SqlClient.SqlTransaction
trn = Connection.BeginTransaction
Using trn

[code]....

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Output Parameter Defined As Table?

Nov 6, 2009

I'm creating a tool using windows form which needs to retrieve data from an Oracle database configured to use odp.net using an Oracle Stored Procedure. I'm planning to use the code below for some basic testing. The Stored Procedure is made up of a number of OUT parameters, some of which have been mapped using the datatypes available in .NET, however other parameters are defined as tables (I guess lists) and i'm not sure how to access this data

Try
Dim oraConnString As String = "Data Source=*****;User Id=******;Password=******;"
Dim oraConnection As New OracleConnection(oraConnString)

[Code].....

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Sql Server - SQL And ADO.net: Too Many Arguments Specified With Output Parameter

Apr 24, 2009

ALTER PROCEDURE dbo.uspGetOrderTrackingHeaderInfo
@ContractID varchar(9)
, @SalesRepID int
, @StatusID int
, @TypeID int
, @StartDate datetime
[Code]...

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Unable To Get C# Output Parameter Value From Vb6 Application?

Mar 5, 2009

We have an c# class, say we have a following method with out parameterpublic class TestCsharpClass{ public Int32 GetNumber(out bool pbNull){ pbnull=true; return 1; }}tlb file for C# project is generated with regasm tool. The above method is called in vb6 application using callbyName Dim number as IntegerDim objTest as TestCsharpClassdim blnNull as Booleannumber = CallByName(objTest,"GetNumber",VbMethod,blnNull) return value 'Number' is fine.But 'blnNull' boolean variable is "False" always.We were unable to get the out parameter value from C# code.Function signatures are defined in the IDL file.Without changing the function signature is it possible to get the resolution/workaround solution for this issue

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Unable To Get Sp Output Parameter Value In Program?

Jun 25, 2009

I am having a stored procedure in sql 2005 the procedure is to retrieve year code between two days it works correctly in sql query analyzer and it returns value [code]...

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VS 2008 Output Parameter Not Working

Feb 9, 2010

I have a sql stored procedure with an output parameter. I'm just trying to read the output parameter in my code and I just cannot get it to work. The error I get is: "Procedure or function 'GetFolderData' expects parameter '@RootName', which was not supplied."

It looks like I am supplying this but it's not working.

Here is my stored procedure:

ALTER PROCEDURE [dbo].[GetFolderData]
(
@RootID int,

[Code].....

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Call A Stored Procedure With OUTPUT Parameter?

Jul 31, 2009

in my SQL 2005 database I have defined this stored procedure:

CREATE PROCEDURE [dbo].[CheckOrders] (
@PK_Customer uniqueidentifier,
@Amount bigint OUTPUT)

[code]....

When I check the value of nAmount it stil contains the original value -1 the output value didn't return from the stored procedure although the number of records updated is 0 or more. The procedure was checked, it works and there are records updated and the value of @Amount is SET to a value 0 or more. I just don't get the values back. eventough the parameter @Amount is defined as OUTPUT. I also tried with outParam.Direction = Data.ParameterDirection.InputOutput instead of outParam.Direction = Data.ParameterDirection.Output . Same result. How do I get the value back from the stored procedure?

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Check When Output Parameter Is Null Before Binding?

Jan 26, 2011

How can i check if an output parameter is null before i bind it to a asp literal, and if it is null i want to just make the literal [code]...

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Display A Value Of An Output Parameter From A Stored Procedure

Jul 8, 2009

How would I use a value from an output parameter from a stored procedure in a vb 2005 application. I would like to capture a run date from the procedure and show it on several forms in the app.

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MySQL Output Parameter With Asp.net And SqlDataSource Control?

Jul 19, 2011

I'm in the process of switching my application from MSSQL to MYSQL. When I was using MSSQL, I retrieved the last auto increment value via

Private Sub dsImpoundInformation_Inserted(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.SqlDataSourceStatusEventArgs) Handles dsImpoundInformation.Inserted
_impoundId = e.Command.Parameters("impoundId").Value
End Sub

[Code]...

ultimately, I'm just trying to get the last auto increment value but there are other sections of my code in other applications that I plan on switching to MYSQL that depend on output parameters. I have't yet explored using stored procedures but at this time I would like to get this to work in a similar fashion to how I had it with MSSQL.

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Output Parameter For Stored Procedure Failing?

Sep 24, 2009

Output Parameter For Stored Procedure Failing?

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Read Without An Output Parameter Of A Stored Procedure?

May 22, 2010

The mSSQL server I have a stored procedure. That does not have an output parameter.When I run it in SQL Management Studio so the procedure will output 1 cell.

EX:
create procedure [000].[test]
as

[code].....

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String Pointers - How To Get Name Output Parameter And Work With It

Jan 27, 2011

My application uses a third party API. This API uses a few functions that returns a value by reference as one of the function parameters. Problem is according to their documentation, the value I am trying to get out of this function is a string pointer.

So if that made no sense, heres an example of the syntax of the function as shown in their documentation:
long ExampleFunction(long ID, long PropNum, char* name, long MaxStringLength)
Input Parameters: ID, PropNum
Output Parameters: name, MaxStringLength

Thats pretty much all the info I've got. Obviously they are not using VB.Net, looks like C to me. I want to get the name output parameter and work with it, but once I get this value, I cant change anything. I know this is because its a pointer (reference type?) but I am still at a loss as to what to do.

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Output Database Return In Textboxes?

Dec 23, 2011

How can I go about outputting specific data from a database query into textboxes. I'm currently using a datatable to store the query result, should I try something else?

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Passing SQL Output Statement?

Apr 19, 2010

Im creating a quick utility program that deletes any invalid data within my database. This works fine and im happy with it. I was thinking why not backup this table first before modifying the bad data, easy! I was Wrong. Seems to be a problem with my sql command and the way vb passes it.

Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
con.ConnectionString = "Provider=ASAProv;" & "Data source=MY_DSN;UID=dba;PWD=sql"

[code]....

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Return Type Of Parameter Is Not CLS-compliant

Jun 28, 2010

I have a base class with a static function that returns a typed dataset. I have several classes that inherit the base class with a non-static function that returns the same typed dataset. On these methods I get the 'Return type of parameter yadda
is not CLS-compliant' I don't understand where this is coming from. I have non unsigned integers/etc. in this dataset.

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Truncated Output Parameter Returned From Stored Procedure In A Web Application?

Mar 6, 2010

I have a very simple stored procedure built in SQL Server 2008 that looks like this.

CREATE PROCEDURE [dbo].[usp_delBannedIP]
-- Set Required Parameters
@RowID int,

[code].....

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Ms Sql Stored Procedure Return Data Without Output?

Mar 16, 2012

i am trying to find examples of getting data back from a stored procedure that has no parameters sent to it nor has any returned output parameter. Though it does display data.How can i get that from my code im using below?

Dim myCommandSQL As New SqlCommand
Dim myReaderSQL As SqlDataReader = Nothing
Dim intX As Integer = 0[code]....

The @return_value i just put there to see what would happen but i got nothing returned.

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Use And If Statement To Output To 2 Text Boxes?

Jun 22, 2012

I had a small query relating to using an If statement.

Is there a short / easy way to populate 2 or more text boxes with different text if an if statement is true.

So.

If A = 1 then TextBox1 = "AA" and TextBox2 = "BB" etc

I've tried doing it with 'And' '&' but just keep getting a 'False' appear in my Textbox1 and nothing in the 2nd or 3rd.

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How To Handle Variable Type (parameter & Return Value)

May 25, 2011

Is it possible to replace these two functions

Function f1 (s As String) As class1()
Dim a() As String = Split(s)
Dim b(UBound(a)) As class1

[code].....

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Return Object As Parameter For NHibernate Entity?

Nov 2, 2010

I'm writing a solution where the data entities are passed to clients using datasets through a WCF service, with nHibernate as ORM. My predecessor has written some translator classes, converting datasets to entities and vice versa. In most cases he's declared the return object as a parameter for the object.

For example:

Public Shared Function CreateEntity(ByVal ds As DataSetObject, ByVal entity As EntityObject) As EntityObject
Dim row As ds.EntityObjectRow = ds.EntityObject(0)
entity.Id = row.Id

[code]....

He's not with the company anymore, so I can't ask him why he's done it this way. Hence my question here. Is there some performance gain, or traceablity thing with nHibernate by using the first implementation rather than the latter?

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VS 2008 Way Of Declaring A Parameter In Function And Return A Value?

Apr 26, 2010

I have created my own ListViewItem class, and added some custom properties to it of attributes. What I have at the moment is a tooltip which shows all of those custom properties (about 18 of them).What I want to be able to do is if multiple are selected, to show a tooltip, but if a property (say Title) for all of them is "My Title" it will show that, otherwise if they are different, I would like it to show "VARIES"Is there a way of declaring a parameter in my function and return a value? [code]

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