HowTo Catch The Constraint Errors While Using SqlDataSource
Aug 3, 2007
I have a sqldatasource and I allow deletions that could cause a constraint violation. I want to capture this error however, I am using the sqldatasource bound to my datacontrol. I dont know where to catch the error. Unfortunately there is no OnError event for the control... There is no code behind for this at this time. I am hoping there is a way to do this without completely rewiring everything.
I'm having trouble with a Script Component in a data flow task. I have code that does a SqlCommand.ExecuteReader() call that throws an 'Object reference not set to an instance of an object' error. Thing is, the SqlCommand.ExecuteReader() call is already inside a Try..Catch block. Essentially I have two questions regarding this error:
a) Why doesn't my Catch block catch the exception? b) I've made sure that my SqlCommand object and the SqlConnection property that it uses are properly instantiated, and the query is correct. Any ideas on why it is throwing that exception?
I use a CLR external function to call a payment gateway, for some reason, I could not get any status sometime, check the following code, I expect I get either -2 or -3 in status no matter what error happens - include the gateway error or the CLR error since I have try catch there. Do you think the following code could miss any problem?
update link_payments set ccagentcode=@ccagentcode,status=-2,postresult=@postresult where id=@paymentid
.... end try begin catch select @message= '<br>ErrorNumber: '+cast(ERROR_NUMBER() as varchar)+char(13)+ '<br>ErrorSeverity: '+cast(ERROR_SEVERITY() as varchar)+char(13)+ '<br>ErrorState: '+cast(ERROR_STATE() as varchar)+char(13)+ '<br>ErrorProcedure: '+isnull(ERROR_PROCEDURE(),'')+char(13)+ '<br>ErrorLine: '+cast(ERROR_LINE() as varchar)+char(13)+ '<br>ErrorMessage: '+isnull(ERROR_MESSAGE(),'')+char(13)
update link_payments set status=-3,postresult=@message where id=@paymentid return -1 end catch
Ive started using try/catch in my t-sql code now and I rather like it, since im a C# developer. I read that some errors with an error code below 10 will not cause the catch block to be entered. What kind of errors does this include ?
Is there any way to emulate the try/catch mechanism that SqlServer2005 provides using SqlServer2000? Or more simply, Is there any kind of IGNORE_ERROR or CONTINUE_ON_ERROR setting for SqlServer 2000?
When a catchable error occurs in a try block, control is passed to theassociated catch block. While I am then able to examine properties ofthe error using such functions as ERROR_NUMBER() in the catch block,the error-logging scheme used in my company requires that the actualerror be raised so that it can be picked up by components in the nexttier. I appear to be unable to do that -- I can raise some other errorthat has all of the properties of the original except the error number.For example, division by zero raises error 8134. If the code thatproduces that error is enclosed in a try block, I seem to be unable toraise that error from the catch block. Of course, if I never used thetry block to begin with this wouldn't be a problem, but then wewouldn't have the advantages of this structure as it applies to othererrors, some of which we may wish to handle differently. WhileTry-Catch looks great as a way of allowing us to handle errors in acustomized way and to avoid having all errors be passed up to ourmiddle tier, it seems that we are unable to pass ANY such errorsforward, and that is a problem for us, too. Is my understanding ofthis situation correct, or is there some way around this problem, e.g.,is there any way I could have raised error 8134, in the above example?Thanks.
hi, i want to execute a finctionX() based on the returned resultset of SQLDataSource. For example, if the SELECT command returns nothing based on a specific search criteria then I want to execute functionX(). Currently, I have a string that displays "No Result" in the GridView in such case. How to catch the resultset of SQLDataSource? -nero
I have read some ideas on this, but nothing is working for me.I have an SQLDataSource bound to a FormView. I need to use the FormView to Insert new rows. When I type new values, all is well. When I type a duplicate, a get a runtime primary key error. That's fine, but how do I trap that? Overriding Page_Error doesn't work for me.Anyone please?
I'm new to using SQL Data Source, so bare with me on the newbie question. Is there a way to do a Try...Catch type scenario on the SDS? I have a grid and a SDS that is mapped together but previously I use to use a Try...Catch and show any errors. What can I do to display a message if there is an error with the SDS? Try 'Call to DBCatch label1.txt = "Error: " & ex.Message.ToStringEnd Try And is the best way to determine if there are any records to display is to use the SDS_Selected event?Dim Rec as Integer = e.AffectedRowsIf Rec = 0 Then label1.text = "No Records Found."End If
Ok, when i use a sqldatasource control and build a INSERT command like below. My code always gives me a already have @UserId parameter error when I try to insert. What am I doing wrong here? SqlDataSource INSERT COMMAND:INSERT INTO Ranger_Profile(UserId, FirstName, LastName, Address, City, State, Zip, HomePhone, CellPhone, Email) VALUES (@UserId, @FirstName, @LastName, @Address, @City, @State, @Zip, @HomePhone, @CellPhone, @Email)Page Code:Dim RangerProfileDataSource As SqlDataSource = SqlDataSource1RangerProfileDataSource.InsertParameters.Add("UserId", CreateNewUser.UserName.ToString)RangerProfileDataSource.InsertParameters.Add("FirstName", txtFirstName.Text.ToString)RangerProfileDataSource.InsertParameters.Add("LastName", txtLastName.Text.ToString)RangerProfileDataSource.InsertParameters.Add("Address", txtAddress.Text.ToString)RangerProfileDataSource.InsertParameters.Add("City", txtCity.Text.ToString)RangerProfileDataSource.InsertParameters.Add("State", txtState.Text.ToString)RangerProfileDataSource.InsertParameters.Add("Zip", txtZip.Text.ToString)RangerProfileDataSource.InsertParameters.Add("HomePhone", txtHomePhone.Text.ToString)RangerProfileDataSource.InsertParameters.Add("CellPhone", txtCellPhone.Text.ToString)RangerProfileDataSource.InsertParameters.Add("Email", CreateNewUser.Email.ToString)Dim rowsaffected As Integer = SqlDataSource1.InsertIf rowsaffected = 0 Then'End If
Hi There - is it possible to output the SQL that a SQLDataSource control is generating. I am having a difficult time diagnosing errors such as the following:
Keyword not supported: 'unicode'. Any help is appreciated.
All of a sudden my application started crashing when trying execute dml statements on sql server mobile database (sdf file). Frustating thing is that whole application crashes without any error message. this happens for all kinds for DML statement but not all the time. Sometimes it would fail for delete statement such as delete from table; or for insert into statement
my problem catch does not catch the error. There is no way to find out teh what is causing this error
SqlCeConnection sqlcon = new SqlCeConnection("
Data Source = '\Program Files\HISSymbol\HISSymboldb.sdf';"
);
SqlCeCommand sqlcmd = new SqlCeCommand();
sqlcmd.CommandText = Insert into company('AA', 'Lower Plenty Hotel');
sqlcmd.Connection = sqlcon;
SqlCeDataReader sqldr = null;
try
{
sqlcon.Open();
//use nonquery if result is not needed
sqlcmd.ExecuteNonQuery(); // application crashes here
}
catch (Exception e)
{
base.myErrorMsg = e.ToString();
}
finally
{
if (sqlcon != null)
{
if (sqlcon.State != System.Data.ConnectionState.Closed)
I am trying to create table with following SQL script:
Code Snippet
create table Projects( ID smallint identity (0, 1) constraint PK_Projects primary key, Name nvarchar (255) constraint NN_Prj_Name not null, Creator nvarchar (255), CreateDate datetime );
When I execute this script I get following error message:
Error source: SQL Server Compact ADO.NET Data Provider Error message: Named Constraint is not supported for this type of constraint. [ Constraint Name = NN_Prj_Name ]
I looked in the SQL Server Books Online and saw following:
CREATE TABLE (SQL Server Compact) ... < column_constraint > ::= [ CONSTRAINT constraint_name ] { [ NULL | NOT NULL ] | [ PRIMARY KEY | UNIQUE ] | REFERENCES ref_table [ ( ref_column ) ] [ ON DELETE { CASCADE | NO ACTION } ] [ ON UPDATE { CASCADE | NO ACTION } ]
As I understand according to documentation named constraints should be supported, however error message says opposite. I can rephrase SQL script by removing named constraint.
Code Snippet
create table Projects( ID smallint identity (0, 1) constraint PK_Projects primary key, Name nvarchar (255) not null, Creator nvarchar (255), CreateDate datetime ); This script executes correctly, however I want named constraints and this does not satisfy me.
We are using SQL CE 3.5 on tablet PCs, that synchs with our host SQL 2005 Server using Microsoft Synchronization Services. On the tablets, when inserting a record, we get the following error: A duplicate value cannot be inserted into a unique index. [ Table name = refRegTitle,Constraint name = PK_refRegTitle But the only PK on this table is RegTitleID.
The table structure is: [RegTitleID] [int] IDENTITY(1,1) NOT NULL, [RegTitleNumber] [int] NOT NULL, [RegTitleDescription] [varchar](200) NOT NULL, [FacilityTypeID] [int] NOT NULL, [Active] [bit] NOT NULL,
The problem occurs when a Title Number is inserted and a record with that number already exists. There is no unique constraint on Title Number. Has anyone else experienced this?
I recently updated the datatype of a sproc parameter from bit to tinyint. When I executed the sproc with the updated parameters the sproc appeared to succeed and returned "1 row(s) affected" in the console. However, the update triggered by the sproc did not actually work.
The table column was a bit which only allows 0 or 1 and the sproc was passing a value of 2 so the table was rejecting this value. However, the sproc did not return an error and appeared to return success. So is there a way to configure the database or sproc to return an error message when this type of error occurs?
I have a parent package that calls child packages inside a For Each container. When I debug/run the parent package (from VS), I get the following error message: Warning: The Execution method succeeded, but the number of errors raised (3) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.
It appears to be failing while executing the child package. However, the logs (via the "progress" tab) for both the parent package and the child package show no errors other than the one listed above (and that shows in the parent package log). The child package appears to validate completely without error (all components are green and no error messages in the log). I turned on SSIS logging to a text file and see nothing in there either.
If I bump up the MaximumErrorCount in the parent package and in the Execute Package Task that calls the child package to 4 (to go one above the error count indicated in the message above), the whole thing executes sucessfully. I don't want to leave the Max Error Count set like this. Is there something I am missing? For example are there errors that do not get logged by default? I get some warnings, do a certain number of warnings equal an error?
Hello!I have a question about the SqlDataSource object.If i make an SqlDataSource with the following sql statement: "SELECT COUNT(id) AS recordCount FROM tblCategory"How do i get the recordCount value to a Variable.Im writing in C#.<asp:SqlDataSource ID="SqlDataSource" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>" SelectCommand="SELECT COUNT(id) AS recordCount FROM [tblCategory]"></asp:SqlDataSource>
What is the C# code I use to do this? I'm guessing it should be fairly simple, as there is only one row selected. I just need to pull out a specific field from that row and then insert that value into a different SqlDataSource.
Starwin writes "when i execute DBCC CHECKDB, DBCC CHECKCATALOG I reveived the following error. how to solve it?
Server: Msg 8909, Level 16, State 1, Line 1 Table error: Object ID -2093955965, index ID 711, page ID (3:2530). The PageId in the page header = (34443:343146507). . . . . . . . .
CHECKDB found 0 allocation errors and 1 consistency errors in table '(Object ID -1635188736)' (object ID -1635188736). CHECKDB found 0 allocation errors and 1 consistency errors in table '(Object ID -1600811521)' (object ID -1600811521).
. . . . . . . .
Server: Msg 8909, Level 16, State 1, Line 1 Table error: Object ID -8748568, index ID 50307, page ID (3:2497). The PageId in the page header = (26707:762626875). Server: Msg 8909, Level 16, State 1, Line 1 Table error: Object ID -7615284, index ID 35836, page ID (3:2534). The PageId in the page heade"
The objective is to configure on a dev machine. Selecting New Database User is the easy part as the ***ASPNET user can be selected from the drop down listbox. What follows and what to do next is a myriad of choices. What needs to be done next? Is there a step-by-step document somewhere that you can refer?
I'm trying to do a fulltext search which returns the adjacent words also in the result, like u do a google search and it returns the paragraph containing the searched phrase.
Hi,Trying to get a grip on the "join" thing :)Up until now, I allways used this kinda method:"(select t1.a from t1 where t1.b in (select t2.ab from t2 where t2.b=0))"How can this be accomplished using joins? And if you have the time pleaseexplain the "bits" :)Thank you.--?TH
In a DataFlowTask with several OLE DB Destinations, how can I "last", before ending this DFT execute a storedProcedure?
This storedprocedure is used for saving metadata (taskname, rowcounts etc) regarding this DFT and I dont want to add an ExecuteSQLTask after the DFT in the Control Flow
i have the following Problem: i need to have a database-design in which there are a variable number of customers , a variable numbers of products and a price per product per user. My solution looks like this:
Table Customer: CustomerID ...
Table Products: ProductID ...
Table Prices: CustomerID ProductID Price
Now my question: is it possible to get a Pricelist with one customer and all his prices in one row? E.g.:
CustomerID ; PriceProduct1 ; PriceProduct2 ; ....
So one Price-Column per Product, one Row per Customer? Can i do something like that with an sql-statement , view or stored-procedure so the number of Columns in the result depends on the number of Products and should be "dynamic" - which means when i add a new product to the product-table a new price-column is appended to the result?
I would like to gain data from a temporaly table created by an EXEC command. e.g. EXEC('SELECT col1, col2, col3 FROM Table WHERE ...') - that's right. But I would like to use it: SELECT * FROM _ThisTempTableTheExecCommandHasCreatedRigthNow WHERE...
I know that a function can return a table but an sp cannot.
