DataSource Controls :: Inserting A New Records Into SQL DB By More Than One User Simultaneously

Jul 12, 2010

I'm having a problem when two or more users simultaneous work on a webpage and provides info to create a new record in my database. the issue is that for some reason, their entries get mixed up and the wrong data gets commited to the database, how can i fix this. All the webpages i browsed for help provide optimistic concurrecny on updaing/deleting existing records, not creating new ones.

I also turned off SessionViewState, but I don't think it helps.

I'm not using a ObjectSource Control, i'm creating new instances of the BLL Classes in my code as I need. Should I null the objects after I use them? They are only created in the scope of a method, so it should essentially dispose of the object when the method completes.

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CREATE PROCEDURE dbo.Insertvalues
(
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@NewJobTitle NVARCHAR(100) ,
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@Newchiled_department1 nvarchar(100),
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AS
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[Code].....

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[code]....

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I have a listview that I automatically generated from a database table, enabling editing and inserting on the listview and the EntityDataSource that runs it.

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<asp:EntityDataSource ID="gradesEds" runat="server"
ConnectionString="name=SAAEntities" DefaultContainerName="SAAEntities"
EntitySetName="tblStudentGrades" AutoGenerateWhereClause="True" OrderBy="it.Date DESC"
EnableUpdate="True" EnableInsert="True">
<WhereParameters>
<asp:SessionParameter Name="StudentID" SessionField="SelectedStudentID" Type="String" />
<asp:SessionParameter Name="Class" SessionField="SelectedClass" Type="String" />
</WhereParameters>
<InsertParameters>
<asp:Parameter Name="GradeID" Type="Int32" Direction="Output" />
<asp:Parameter Name="StudentID" Type="String" />
<asp:Parameter Name="Prof" Type="String" />
<asp:Parameter Name="Class" Type="String" />
<asp:Parameter Name="Date" Type="DateTime" />
<asp:Parameter Name="Term" Type="String" />
<asp:Parameter Name="Year" Type="String" />
<asp:Parameter Name="Source" Type="String" />
<asp:Parameter Name="Grade" Type="String" />
<asp:Parameter Name="Read" Type="Boolean" />
<asp:Parameter Name="OtherInfo1" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo2" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo3" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo4" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo5" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo6" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo7" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo8" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo9" Type="Boolean" />
</InsertParameters>
</asp:EntityDataSource>
<asp:ListView ID="ListView1" runat="server" DataKeyNames="GradeID,StudentID"
DataSourceID="gradesEds" InsertItemPosition="LastItem" >
<ItemTemplate>
<tr style="background-color: #FFFBD6;color: #333333;">
<td>
<asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
</td>
<td>
<asp:Label ID="GradeIDLabel" runat="server" Text='<%# Eval("GradeID") %>' />
<asp:Label ID="StudentIDLabel" runat="server" Text='<%# Eval("StudentID") %>' />
<asp:Label ID="ProfLabel" runat="server" Text='<%# Eval("Prof") %>' />
<asp:Label ID="ClassLabel" runat="server" Text='<%# Eval("Class") %>' />
<asp:Label ID="DateLabel" runat="server" Text='<%# Eval("Date") %>' />
<asp:Label ID="TermLabel" runat="server" Text='<%# Eval("Term") %>' />
<asp:Label ID="YearLabel" runat="server" Text='<%# Eval("Year") %>' />
</td>
<td>
<asp:Label ID="SourceLabel" runat="server" Text='<%# Eval("Source") %>' />
</td>
<td>
<asp:Label ID="GradeLabel" runat="server" Text='<%# Eval("Grade") %>' />
</td>
<td>
<asp:Label ID="CommentsLabel" runat="server" Text='<%# Eval("Comments") %>' />
</td>
<td>
<asp:Label ID="NotesLabel" runat="server" Text='<%# Eval("Notes") %>' />
</td>
<td>
<asp:CheckBox ID="ReadCheckBox" runat="server" Checked='<%# Eval("Read") %>'
Enabled="false" />
</td>
<td>
<asp:CheckBox ID="OtherInfo1CheckBox" runat="server"
Checked='<%# Eval("OtherInfo1") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo2CheckBox" runat="server"
Checked='<%# Eval("OtherInfo2") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo3CheckBox" runat="server"
Checked='<%# Eval("OtherInfo3") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo4CheckBox" runat="server"
Checked='<%# Eval("OtherInfo4") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo5CheckBox" runat="server"
Checked='<%# Eval("OtherInfo5") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo6CheckBox" runat="server"
Checked='<%# Eval("OtherInfo6") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo7CheckBox" runat="server"
Checked='<%# Eval("OtherInfo7") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo8CheckBox" runat="server"
Checked='<%# Eval("OtherInfo8") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo9CheckBox" runat="server"
Checked='<%# Eval("OtherInfo9") %>' Enabled="false" />
</td>
</tr>
</ItemTemplate>
<AlternatingItemTemplate>
<tr style="background-color: #FAFAD2;color: #284775;">
<td>
<asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
</td>
<td>
<asp:Label ID="GradeIDLabel" runat="server" Text='<%# Eval("GradeID") %>' />
<asp:Label ID="StudentIDLabel" runat="server" Text='<%# Eval("StudentID") %>' />
<asp:Label ID="ProfLabel" runat="server" Text='<%# Eval("Prof") %>' />
<asp:Label ID="ClassLabel" runat="server" Text='<%# Eval("Class") %>' />
<asp:Label ID="DateLabel" runat="server" Text='<%# Eval("Date") %>' />
<asp:Label ID="TermLabel" runat="server" Text='<%# Eval("Term") %>' />
<asp:Label ID="YearLabel" runat="server" Text='<%# Eval("Year") %>' />
</td>
<td>
<asp:Label ID="SourceLabel" runat="server" Text='<%# Eval("Source") %>' />
</td>
<td>
<asp:Label ID="GradeLabel" runat="server" Text='<%# Eval("Grade") %>' />
</td>
<td>
<asp:Label ID="CommentsLabel" runat="server" Text='<%# Eval("Comments") %>' />
</td>
<td>
<asp:Label ID="NotesLabel" runat="server" Text='<%# Eval("Notes") %>' />
</td>
<td>
<asp:CheckBox ID="ReadCheckBox" runat="server" Checked='<%# Eval("Read") %>'
Enabled="false" />
</td>
<td>
<asp:CheckBox ID="OtherInfo1CheckBox" runat="server"
Checked='<%# Eval("OtherInfo1") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo2CheckBox" runat="server"
Checked='<%# Eval("OtherInfo2") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo3CheckBox" runat="server"
Checked='<%# Eval("OtherInfo3") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo4CheckBox" runat="server"
Checked='<%# Eval("OtherInfo4") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo5CheckBox" runat="server"
Checked='<%# Eval("OtherInfo5") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo6CheckBox" runat="server"
Checked='<%# Eval("OtherInfo6") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo7CheckBox" runat="server"
Checked='<%# Eval("OtherInfo7") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo8CheckBox" runat="server"
Checked='<%# Eval("OtherInfo8") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo9CheckBox" runat="server"
Checked='<%# Eval("OtherInfo9") %>' Enabled="false" />
</td>
</tr>
</AlternatingItemTemplate>
<EmptyDataTemplate>
<table runat="server"
style="background-color: #FFFFFF;border-collapse: collapse;border-color: #999999;border-style:none;border-width:1px;">
<tr>
<td>
No data was returned.</td>
</tr>
</table>
</EmptyDataTemplate>
<InsertItemTemplate>
<tr style="">
<td>
<asp:Button ID="InsertButton" runat="server" CommandName="Insert"
Text="Insert" />
<asp:Button ID="CancelButton" runat="server" CommandName="Cancel"
Text="Clear" />
</td>
<td>
<!--
<asp:TextBox ID="StudentIDTextBox" runat="server"
Text='<%# Bind("StudentID") %>' />
<asp:TextBox ID="ProfTextBox" runat="server" Text='<%# Bind("Prof") %>' />
<asp:TextBox ID="ClassTextBox" runat="server" Text='<%# Bind("Class") %>' />
--> <asp:TextBox ID="DateTextBox" runat="server" Text='<%# Bind("Date") %>' />
<!-- <asp:TextBox ID="TermTextBox" runat="server" Text='<%# Bind("Term") %>' />
<asp:TextBox ID="YearTextBox" runat="server" Text='<%# Bind("Year") %>' />
--> </td>
<td>
<asp:TextBox ID="SourceTextBox" runat="server" Text='<%# Bind("Source") %>' />
</td>
<td>
<asp:TextBox ID="GradeTextBox" runat="server" Text='<%# Bind("Grade") %>' />
</td>
<td>
<asp:TextBox ID="CommentsTextBox" runat="server"
Text='<%# Bind("Comments") %>' />
</td>
<td>
<asp:TextBox ID="NotesTextBox" runat="server" Text='<%# Bind("Notes") %>' />
</td>
<td>
<asp:CheckBox ID="ReadCheckBox" runat="server" Checked='<%# Bind("Read") %>' />
</td>
<td>
<!-- <asp:CheckBox ID="OtherInfo1CheckBox" runat="server"
Checked='<%# Bind("OtherInfo1") %>' />
<asp:CheckBox ID="OtherInfo2CheckBox" runat="server"
Checked='<%# Bind("OtherInfo2") %>' />
<asp:CheckBox ID="OtherInfo3CheckBox" runat="server"
Checked='<%# Bind("OtherInfo3") %>' />
<asp:CheckBox ID="OtherInfo4CheckBox" runat="server"
Checked='<%# Bind("OtherInfo4") %>' />
<asp:CheckBox ID="OtherInfo5CheckBox" runat="server"
Checked='<%# Bind("OtherInfo5") %>' />
<asp:CheckBox ID="OtherInfo6CheckBox" runat="server"
Checked='<%# Bind("OtherInfo6") %>' />
<asp:CheckBox ID="OtherInfo7CheckBox" runat="server"
Checked='<%# Bind("OtherInfo7") %>' />
<asp:CheckBox ID="OtherInfo8CheckBox" runat="server"
Checked='<%# Bind("OtherInfo8") %>' /> -->
<asp:CheckBox ID="OtherInfo9CheckBox" runat="server"
Checked='<%# Bind("OtherInfo9") %>' />
</td>
</tr>
</InsertItemTemplate>
<LayoutTemplate>
<table runat="server">
<tr runat="server">
<td runat="server">
<table ID="itemPlaceholderContainer" runat="server" border="1"
style="background-color: #FFFFFF;border-collapse: collapse;border-color: #999999;border-style:none;border-width:1px;font-family: Verdana, Arial, Helvetica, sans-serif;">
<tr runat="server" style="background-color: #FFFBD6;color: #333333;">
<th runat="server">
</th>
<th runat="server">
Date</th>
<th runat="server">
Source</th>
<th runat="server">
Grade</th>
<th runat="server">
Comments</th>
<th runat="server">
Notes</th>
<th runat="server">
Read</th>
<th runat="server">
OtherInfo9</th>
</tr>
<tr ID="itemPlaceholder" runat="server">
</tr>
</table>
</td>
</tr>
<tr runat="server">
<td runat="server"
style="text-align: center;background-color: #FFCC66;font-family: Verdana, Arial, Helvetica, sans-serif;color: #333333;">
<asp:DataPager ID="DataPager1" runat="server">
<Fields>
<asp:NextPreviousPagerField ButtonType="Button" ShowFirstPageButton="True"
ShowNextPageButton="False" ShowPreviousPageButton="False" />
<asp:NumericPagerField />
<asp:NextPreviousPagerField ButtonType="Button" ShowLastPageButton="True"
ShowNextPageButton="False" ShowPreviousPageButton="False" />
</Fields>
</asp:DataPager>
</td>
</tr>
</table>
</LayoutTemplate>
<EditItemTemplate>
<tr style="background-color: #FFCC66;color: #000080;">
<td>
<asp:Button ID="UpdateButton" runat="server" CommandName="Update"
Text="Update" />
<asp:Button ID="CancelButton" runat="server" CommandName="Cancel"
Text="Cancel" />
</td>
<td>
<asp:Label ID="GradeIDLabel1" runat="server" Text='<%# Eval("GradeID") %>' />
<asp:TextBox ID="StudentIDTextBox" runat="server"
Text='<%# Bind("StudentID") %>' />
<asp:TextBox ID="ProfTextBox" runat="server" Text='<%# Bind("Prof") %>' />
<asp:TextBox ID="ClassTextBox" runat="server" Text='<%# Bind("Class") %>' />
<asp:TextBox ID="DateTextBox" runat="server" Text='<%# Bind("Date") %>' />
<asp:TextBox ID="TermTextBox" runat="server" Text='<%# Bind("Term") %>' />
<asp:TextBox ID="YearTextBox" runat="server" Text='<%# Bind("Year") %>' />
</td>
<td>
<asp:TextBox ID="SourceTextBox" runat="server" Text='<%# Bind("Source") %>' />
</td>
<td>
<asp:TextBox ID="GradeTextBox" runat="server" Text='<%# Bind("Grade") %>' />
</td>
<td>
<asp:TextBox ID="CommentsTextBox" runat="server"
Text='<%# Bind("Comments") %>' />
</td>
<td>
<asp:TextBox ID="NotesTextBox" runat="server" Text='<%# Bind("Notes") %>' />
</td>
<td>
<asp:CheckBox ID="ReadCheckBox" runat="server" Checked='<%# Bind("Read") %>' />
</td>
<td>
<asp:CheckBox ID="OtherInfo1CheckBox" runat="server"
Checked='<%# Bind("OtherInfo1") %>' />
<asp:CheckBox ID="OtherInfo2CheckBox" runat="server"
Checked='<%# Bind("OtherInfo2") %>' />
<asp:CheckBox ID="OtherInfo3CheckBox" runat="server"
Checked='<%# Bind("OtherInfo3") %>' />
<asp:CheckBox ID="OtherInfo4CheckBox" runat="server"
Checked='<%# Bind("OtherInfo4") %>' />
<asp:CheckBox ID="OtherInfo5CheckBox" runat="server"
Checked='<%# Bind("OtherInfo5") %>' />
<asp:CheckBox ID="OtherInfo6CheckBox" runat="server"
Checked='<%# Bind("OtherInfo6") %>' />
<asp:CheckBox ID="OtherInfo7CheckBox" runat="server"
Checked='<%# Bind("OtherInfo7") %>' />
<asp:CheckBox ID="OtherInfo8CheckBox" runat="server"
Checked='<%# Bind("OtherInfo8") %>' />
<asp:CheckBox ID="OtherInfo9CheckBox" runat="server"
Checked='<%# Bind("OtherInfo9") %>' />
</td>
</tr>
</EditItemTemplate>
<SelectedItemTemplate>
<tr style="background-color: #FFCC66;font-weight: bold;color: #000080;">
<td>
<asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
</td>
<td>
<asp:Label ID="GradeIDLabel" runat="server" Text='<%# Eval("GradeID") %>' />
<asp:Label ID="StudentIDLabel" runat="server" Text='<%# Eval("StudentID") %>' />
<asp:Label ID="ProfLabel" runat="server" Text='<%# Eval("Prof") %>' />
<asp:Label ID="ClassLabel" runat="server" Text='<%# Eval("Class") %>' />
<asp:Label ID="DateLabel" runat="server" Text='<%# Eval("Date") %>' />
<asp:Label ID="TermLabel" runat="server" Text='<%# Eval("Term") %>' />
<asp:Label ID="YearLabel" runat="server" Text='<%# Eval("Year") %>' />
</td>
<td>
<asp:Label ID="SourceLabel" runat="server" Text='<%# Eval("Source") %>' />
</td>
<td>
<asp:Label ID="GradeLabel" runat="server" Text='<%# Eval("Grade") %>' />
</td>
<td>
<asp:Label ID="CommentsLabel" runat="server" Text='<%# Eval("Comments") %>' />
</td>
<td>
<asp:Label ID="NotesLabel" runat="server" Text='<%# Eval("Notes") %>' />
</td>
<td>
<asp:CheckBox ID="ReadCheckBox" runat="server" Checked='<%# Eval("Read") %>'
Enabled="false" />
</td>
<td>
<asp:CheckBox ID="OtherInfo1CheckBox" runat="server"
Checked='<%# Eval("OtherInfo1") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo2CheckBox" runat="server"
Checked='<%# Eval("OtherInfo2") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo3CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo4CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo5CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo6CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo7CheckBox" runat="server"
Checked='<%# Eval("OtherInfo7") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo8CheckBox" runat="server"
Checked='<%# Eval("OtherInfo8") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo9CheckBox" runat="server"
Checked='<%# Eval("OtherInfo9") %>' Enabled="false" />
</td>
</tr>
</SelectedItemTemplate>
</asp:ListView>

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Here's the next instalment of my asp.net data access nightmare!

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The listview's datasource has an INSERT command and insert parameters specified. The button seems to be triggering the listview's insert method because the ItemInserting event fires.

With no error message to go on I'm struggling to figure out what the problem is. I have a feeling it's something to do with the makeup of the page. The listview in question is nested within an Accordion control and the listview's data source isn't set until runtime, when it's done in the ItemDataBound event of the Accordion control. As I say, though, it does RETRIEVE data correctly, it's just the inserting that's a problem.

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[Code]....

[Code]....

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<asp:TemplateField ...>
<ItemTemplate>
<asp:DropDownList ..../>

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I have a gridview with 3 columns dropdown, textbox1, textbox2.

On pageload my gridview loads with one row i.e dropdown with databinding done with some values, empty Textbox, empty textbox2

i have add new row button

clicking on that i will get new row in gridview with dropdown with databinding done with some values, empty Textbox, empty textbox2

I have save button to save the gridview rows into DB.

Question:

I should not allow user to select same dropdown value in two different rows. How can i validate that.

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Forms Data Controls :: How To Open A Page When Inserting Records From Detailsview

Mar 15, 2010

I've looked all over for this problem but can't find anything that works. I have a details view bound to a database that when a user enters their details and clicks insert it will store the data and then send them to another page. I have tried response.redirect but that does nothing. I am using c# btw.

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Forms Data Controls :: Checking For Duplicate Records In Gridview Before Inserting To Database?

May 10, 2010

I need to check for duplicate records before inserting them into the SQL database.Thus I have the following codes:

For count = 0 To GridView1.Rows.Count
If (GridView1.Rows(count).DataItem("Student Name").Equals(dtDataTable.Rows(count).Item("Student ID"))) Then
lblMsg.Text = "Records Existed"
End If

but there are error message. "Object variable or With block variable not set."

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Forms Data Controls :: Inserting Records Based On Checkbox Selection In Gridview

Sep 10, 2010

Using checkboxes, can the row of record(s) be inserted into a database? I am populating a Gridview. Done. A checkbox field has been added, when the user selects one or more rows, a submit button (which is not working) needs to inserting those records into a table. The insert statment will work outside of the page but is not working using the scenario I jut described. Is this task as I have outlined doable?

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DataSource Controls :: Inserting Data With Object Datasource?

Aug 9, 2010

This is the first time I have been working on databases and I am trying to insert data using an object datasource but no data is being inserted and no exception is thrown. I'm not sure where I am going to wrong. I am putting user data into session variables and inserting the session variables into the dataacess class layer and have a try and exception but nothing being thrown. Any help would be really appreciated because I don't know even where to start looking with this or how I can get the error to be thrown. Please see some of my code below to give an idea of what I am doing

Object Access Class
public void InsertCarPolicyHolder(PolicyHolderClass ph, CarInsuranceOptions options)
{

[code]...

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ADO.NET :: Error Inserting New Records?

Nov 1, 2010

i am trying to insert new records by using a stored procedure with the following code:

[Code]....

I get the following error:

Microsoft SQL Native Client error '80040e14'

A server cursor cannot be opened on the given statement or statements. Use a default result set or client cursor.

Referring to this line:

Records.Open Command, , adOpenStatic

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Data Controls :: Check For Duplicate Records While Inserting Data Using Details View Control

Feb 19, 2014

I have a detail view form consist of five fields my 1st field is jobnumber which is primary key i want to do that when user by mistake enter the duplicate jobnumber error occur that this is already used how can i do this ?

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Web Forms :: Why SPROC Inserting Two Records Instead Of One

Oct 13, 2010

Why am I getting two records inserted into the table, when I'm expecting and needing one? The VB code below is checking whether the HTTP is secure or not, and if it is then execute the SPROC. But for whatever reason, I'm getting two records inserted about 5 seconds apart. Does anyone know why and how to fix? I just need one record.

SPROC [Code]....

VB [Code]....

GLOBAL.ASAX [Code]....

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SQL Server :: Getting Error With Inserting Records

Oct 1, 2010

When i am inserting my data i am getting this error

An explicit value for the identity column in table 'emp' can only be specified when a column list is used and IDENTITY_INSERT is ON.

i have set Identitty specification and is identity of the table as yes so i am getting this problem whenevr i set it to no i am not getting any error,can anyone explain me why i am getting this error??

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ADO.NET :: Inserting 1000 Records / Using Linq To SQL

Dec 7, 2010

I am using Linq to SQL. I have a table with a uniqueidentifyer column.

I need to insert 1000 records, each with all the same values except for the uniqueid field.

I know the syntax to insert a single record for example where dc is a DataContext():

[Code]....

Does anyone know how if there is a way, other than looping 1000 times, to tell SQL to insert 1000 records generating different unique ids but assign the constant values to the other columns?

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Web Forms :: Inserting Multiple Records In Database

Apr 5, 2010

I am having 3 textboxes where I am inserting 3 employee names.I want to insert these details into database as 3 different records.Pls respond me ASAP

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