Forms Data Controls ::lookup Causes Constraint Error?
Mar 27, 2010I have a Dataset defined called Content. There is an adapter / table definition in it called Users tied to a table called Users. This table consists of:
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DataSource Controls :: Violation Of UNIQUE KEY Constraint Visual Basic Error Page
Apr 27, 2010I'm new to asp.net and I'm building a project in which I send data to a database MSSQL, I've set a constraintname on some fields that I wantto be unique, now how do I catch that error when people insert a duble and handle it with a redirectionto custom error pagehere the code just in case you need it
Dim con As New System.Data.SqlClient.SqlConnection
con.ConnectionString = "Data Source=localhost;Initial Catalog=Database1;User ID=user;Password=password;TrustServerCertificate=True"
Dim myCommand As New System.Data.SqlClient.SqlCommand
myCommand.CommandText = "INSERT INTO serves(CategoryID,UserId,vote, Img, link, Description) VALUES('" & DropDownList1.SelectedValue & "','" & UId.Text & " ' ,1,'" & TextBox1.Text & "','" & "<a href=" + TextBox2.Text + ">" + TextBox4.Text + "</a>" &
"','" & TextBox3.Text & "')"
myCommand.Connection = con
con.Open()
myCommand.ExecuteNonQuery()
Active Directory/LDAP :: Error '8007202f' Automation Error A Constraint Violation Occurred?
Sep 9, 2010I have an old COM+ object that we've used to create AD user accounts with information from our HR system. This process has been broken since a recent upgrade, so I'm attempting to modify the object to point to a new DC and a new inforamtion store during mailbox creation. After modifying the code I am unable to get an account to be crated and the following error appears:error '8007202f' Automation error A constraint violation occurredI am not a developer and I know that this is a long shot but if anyone has any insight into if this is an AD issue or one with VB 6, any help at all would be greatly appreciated. I think this is the relevent code but again, I'm an admin not a developer:
thenewuser.SetInfo
thenewuser.SetPassword "NewBie!!!"
thenewuser.AccountDisabled = False
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Forms Data Controls :: Create A Lookup Data Source Based On A Union Query With The Actual Data And A Blank Record?
Jun 1, 2010I'm new to ASP.net 3.5 and trying to create a test site so I can figure out how to use it in the real world. I have created a FormView (Formview1) based on a Client table using Linq Data Sources. The page includes a DropDownList to lookup Clients. I have added a list option (<asp:ListOption value="" Text="(Select Client)" and set AppendDataBoundItems=true so my added option is displayed. I decided to try to use Formview with only the Edit and Insert Modes, and I have set the Default Mode = Insert. When you open the page, a blank Client record is displayed.
The Client record contains serveral lookup fields and they have drop down lists for each. When I select a client from the Client DropDownList, is get the following message 'ddlClientType' has a SelectedValue which is invalid because it does not exist in the list of items I had this problem before and decided the best way to handle this (in the interim) was to turn off foreign key constraints for each of the lookup fields (e.g. ClientType) in SQL Server. That worked for 2-3 days. Now the problem has started again.
When I develop in other applications, I would simply create a lookup data source based on a Union Query with the actual data and a blank record. How can you do this using Linq DataSources. Can you get access and modify the queries?
Forms Data Controls :: How To Add Lookup Table Values To A DropDownList And Bind To A FKValue In The Grid
Jan 26, 2011I have a GridView control that has a SQLDataSource.
The GridView provides me with a list of musical artists (from the tblArtists)
In the Grid, I have a field, FKGenreID, that is a Foreign Key value for music Genres.
(An example of the data in that field would be "7", which upon lookup would mean Classical in the
tblGenreList table.)
What I'd like to do is add a DropDownList control that looks up the tblGenreList table and populates the DropDownList with the ID and Description from the tblGenreList Lookup table.
Now the tricky part is that if the GridView field (FKGenreID) has a value, then I'd like the corresponding Genre Description to be displayed in the DropDownList
Alternately, if there is no value for FKGenreID in the GridView, then I'd like the DropDownList to show that nothing was selected, but have the list of Genres available.
Most importantly here, when the user makes a selection, I'd like the GenreID (from the DropDownList) to be entered into the FKGenreID field in the GridView field.
My thought is that a gridview record may or may not have a value in the FKGenreID field. Either way, the DropDownList is bound to that field. The DropDownList would display a list ofGenre Descriptions for the user to select from. Upon selection, the GenreID column of the DropDownList becomes the value in for the FKGenreID field in the GridView.
Is this possible?
In case it matters, I'm using ASP.NET 4, Visual Studio 2010, and coding in VB
VS 2010 - Business Layer Constraint Error
Feb 22, 2012I'm working on an application using a 3 tier architecture and I'm having issues with a business layer select method. Basically, I have a gridview control that is populated by an objectDataSource. The ObjectDataSource calls a select method in the my business logic layer to retrieve data. When the business logic layer calls a table adapter method, I receive the following error message:
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints
This is my first attempt at a 3 tier design and I'm not sure where to start with the debugging process.
Also, the stored procedure that is used by the table adapter select method, creates a new column inside of the query. This column is not included in the datasets datatable. I manually inserted a new column into the datatable from the dataset designer. The new column was created to store the values that are being returned from the new column in the stored procedure. I'm not sure if this is the correct way to do this or not but it allowed me to access the column in the business logic layer methods.
MVC :: Capture The Error Of "The DELETE Statement Conflicted With The REFERENCE Constraint?
Feb 24, 2011When i try to delete a record, and the record is link to another table, so i will get the following error:
View 3 RepliesDataSource Controls :: Doing A Data Base Lookup - Where Is The Nvarchar Size Of 4000 Coming From
Feb 18, 2011I want to grab some values with a form and then do a lookup via a datareader in a data access class (N-Tier).
I want to return a data list and bind that to a form view control.
Here is some code from the DAL, Business object and search form.
The parameterized query doesn't like the data being passed to it from my web page .
[code]....
[Code]....
Where is the nvarchar size of 4000 coming from ?
CustomErrors Mode = "off" Error - Invalid Data Type "NM Token - Enumeration Constraint Failed"
May 25, 2010I 'm using visual studio 2007 and I have come up with an error in my web config that I have never come up with before. I have set customError mode "off" in my web config and I'm getting an error code of The 'mode' attribute is invalid ' The value 'off' is invalid according to it's data type 'NM Token' - the enumeration constraint failed what an 'NM token' is and what I can do to fix this problem? My page works perfectly when I'm working on it locally, but when I move it to the web server I get an error and it tells me to set the custom mode errors in the web config to 'off' This is the error I'm getting:
Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.
Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".
Forms Data Controls :: The INSERT Statement Conflicted With The FOREIGN KEY Constraint "FK_student_Details_lecturer_Details"
Mar 31, 2011I cannot get the value from the drop down list and I not sure what's wrong with the declaration and the code.
Dim selectedIntake As String = intakeDropDownList.SelectedItem.Text()
Dim selectedSupervisor As String = supervisorDropDownList.SelectedItem.Text()
.supervisor_ID = selectedSupervisor(0), _
.semester_No = selectedIntake(0) _
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This is the error message I get :
The INSERT statement conflicted with the FOREIGN KEY constraint "FK_student_Details_lecturer_Details". The conflict occurred in database "SKTM-AAS", table "dbo.lecturer_Details", column 'supervisor_ID'. The statement has been terminated.
Forms Data Controls :: DetailsView Insert Mode - Field "manager Name" To Be Populated Based On A Lookup Table In The Database
Aug 30, 2010On my DetailsView for inserting, I have a field "manager code". When the user types in the code, I want another field "manager name" to be populated based on a lookup table in the database. I have done this on a FormView using code behind and "ontextchanged". How can I do this in DetailsView?
View 3 RepliesWeb Forms :: How To Raise Constraint Exception Of A Data Table
Mar 23, 2011had a data table in which i made one column as primary key..the data table is binded to stored proc output..now the datatable is not allowing same values for primary key column,functionality is fine..but the exception is not raised ..simply row is not getting added to grid view..but i want an exception to be raised..how to do that??
View 1 RepliesDataSource Controls :: Using Lookup Value In Gridview?
Sep 15, 2010I've been struggling all day trying to make this work, but I'm just not having any luck. I have 2 tables, 1 is a lookup table and the other is a user table. The lookup table stores the State values in text form, where the user table stores the ID of the State for the particular user. I'm trying to create a editable grid view that allows the user to update their State based on values in the lookup table. I've created an Edit Template with a drop down for the State field. When the user clicks on "Edit" in the GridView I need to be able to reference the SelectedValue of the State and write the index of the State to my user profile table. I'm using two different data sources for this since the GridView needs to display each record from the users table and the Edit Template needs to display only values from the Lookup table. I've included my code below.
<%@ Page Language="C#" MasterPageFile="~/JFCS.Master" CodeBehind="modifyFunder.aspx.cs" Inherits="jfcsGRAMS.modifyFunder" %>
<asp:Content ID="Content1" runat="server" ContentPlaceHolderID="Main">
<div style="float:left;height:500px;width:100%">[code].....
SQL Server :: Catch Sql Server Constraint Error?
Nov 9, 2010I'm trying to remove a user from the aspnet_Users table.
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I received the following error during my try-catch test:
System.Data.SqlClient.SqlException was caught Message=The DELETE statement conflicted with the REFERENCE constraint "FK_lusHmoob_aspnet_Users". The conflict occurred in database "laujtsov", table
"laujAdmin.lusHmoob", column 'whoInsert'.
The statement has been terminated.
Source=.Net SqlClient Data Provider
ErrorCode=-2146232060
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DataSource Controls :: What Is Best Way To Lookup A Value Based On Two Other Values
May 15, 2010 I have a database table with three columns of interest
slottypekey (integer)
taskkey (integer)
permission (string)
Lets's say I have a stored procedure that gets this data and puts it into a dataset.
I would like to write a function that has input parameters of slottypekey and taskkey
and that returns the associated permission. What is the best way to do this?
Security :: Added Profile Provider To Web.config Then Receive Error "Violation Of UNIQUE KEY Constraint IX_aspnet_Users - Cannot Insert Duplicate Key In Object Dbo.aspnet_Users"
Aug 9, 2010I developed a site for a client a couple of years ago. It uses the the standard ASP.NET Membership, authentication, etc. I just added the profile section with (2) fields: CustID AgntID. Now whenever I load the page with any Profile code in it I receive this error: Violation of UNIQUE KEY constraint 'IX_aspnet_Users'. Cannot insert duplicate key in object 'dbo.aspnet_Users'. The INSERT statement conflicted with the FOREIGN KEY constraint "FK__aspnet_Pr__UserI__3CA9F2BB". The conflict occurred in database "broo001", table "dbo.aspnet_Users", column 'UserId'. The statement has been terminated. The statement has been terminated. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: Violation of UNIQUE KEY constraint 'IX_aspnet_Users'. Cannot insert duplicate key in object 'dbo.aspnet_Users'. The INSERT statement conflicted with the FOREIGN KEY constraint "FK__aspnet_Pr__UserI__3CA9F2BB". The conflict occurred in database "broo001", table "dbo.aspnet_Users", column 'UserId'. The statement has been terminated. The statement has been terminated. Source Error:
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Stack Trace:
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Here is the code from my web.config:
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Here is some of my page code:
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DataSource Controls :: How To Create A Constraint For 3 Columns
Jun 4, 2010I want to create a constraint for 3 columns (A B and C) where if columns B or C are not null, then A cannot be null. And vice versa (i.e., if A is not null, then either B cannot be null, or C cannot be null).I am not very well versed in SQL and would like to know what is the best way to achieve this (e.,g Check constraint, stored procedure, function, trigger)? I'm leaning towards trigger but I'm not 100% sure if that's right nor of how to implement it.
View 3 RepliesDataSource Controls :: How To Alter A Check Constraint
Jan 6, 2010Here I have specified a query which gives an idea about how to drop a constraint and recrate it..
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Parent_TableName: is the name of the table where we actually reffer.
DataSource Controls :: SQL Server 2005 Constraint?
Apr 24, 2010let say i have 2 table (PARENT and STUDENT table)
the structure for both table are
STUDENT
PARENT
student_id (PK) parent_id (PK)
student_parent (FK) parent_status (the value is either ACTIVE OR INACTIVE)
- parent_id is refer by STUDENT table as a foreign key
- now i want to inactive the status for parent
- i want my system pop out a message something like "The parent you want to inactive is refer by a student, inactive is not allow"
- is it any constraint in SQL Server 2005 to help me check whether parent it is refer by student table? The concept i want to use is something like delete constraint in SQL Server 2005 mean it is not allow to delete a person who is refer by a student in STUDENT table.
MVC :: SQL Lookup In The Controller Put That Data In A DataTable Then Run A Foreach Loop On The Table To Display This On The View?
May 5, 2010as a php developer ive been told to go the MVC route which ive been trying since yesterday. Im using visual web delveloper 2010 express and im using the MVC template project.Ive basically got a news table in MSSQL Express, in there are these fields ID,(Title,Body,PostedOn,PostedBy) all i wanna do is loop through them to put them on the view.Im after a nudge in the right direction, I want to be able to do a SQL lookup in the controller put that data in a DataTable then run a foreach loop on the table to display this on the view. The problem im getting is I know youre not suppsed to put any HTML in the controller and I cant pass the datatable to the view to do the loop in the view.. so where/how do I do the loop.
View 2 RepliesDataSource Controls :: The DELETE Statement Conflicted With The REFERENCE Constraint
May 12, 2010The DELETE statement conflicted with the REFERENCE constraint "FK_EquipmentStatus_MeetEquip". The conflict occurred in database "D:MEETINGROOMAPAPP_DATADATABASE.MDF", table "dbo.EquipmentStatus", column 'Fk_MeetEquip'.
I'm getting this error when i'm trying to delete a listboxitem. It's true that an other table (EquipmentStatus) is using the primary key attached to the listboxitem, but how can i delete all the rows that causes this problem? I've seen an example using stored procedure, but i dont understand it, since i haven't really worked with it before:
ALTER TABLE t2
DROP CONSTRAINT FK_t1id
ALTER TABLE t2
ADD CONSTRAINT FK_t1id FOREIGN KEY (t1id) REFERENCES t1 (t1id) ON DELETE
CASCADE
My listbox is using MeetEquip table which p-key is MeetEquip.ID, and the fk-key (which generates the problem) is fk_MeetEquip from EquipmentStatus table.
DataSource Controls :: Sql Constraint To Convert Empty String To Null?
May 10, 2010Sql constraint to convert empty string to null
View 7 RepliesDataSource Controls :: Lookup Type Command To Select A Single Value From An Sqlserver Table?
Apr 10, 2010I'm using vwd 2008 express
I need to display a single field from an sqlserver table, do I need to use sqlDataSource ect. or is there a simpler way (like msaccess's LookUp) for single values.
Web Forms :: LookUp Windows Returned Values
Oct 20, 2010In a webform, I have a formview with respective InsertItemTemplate. I have 2 Look Up buttons, one for Student which opens Student LookUp, and one for Mentor which opens the Mentor Look Up.
First on the input screen sequence is allowing the user to choose Student first. User clicks the Student LookUp button, The StudentLookUp Window is shown, user selects a student, the selected student information is returned and displayed on the calling screen.
The user then clicks on the Mentor LookUp button. The Mentor LookUp window is shown. As this is happening, the values for the Student information, which I have populated upon selecting a student from the Student LookUp goes blank. Can anyone tell me why?
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Web Forms :: How To Set Constraint In Msq Table Column
Mar 1, 2011My attendance table structure as follow
EmplID AttendanceDate Atten_Type Atten_Taken
it mean it has lot od data like below with differnet dates
E1
2011-02-21 00:00:00 CL
1
E2
2011-02-21 00:00:00 P
E1
2011-02-22 00:00:00 CL
E2
2011-02-22 00:00:00 P
E1
2011-02-23 00:00:00 CL
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