SQL Server :: Add Data That Maybe Already Exists?
Nov 22, 2010
I have a database for a shop. Now I have run into problem when I'm adding products. I have a page where i add general info of the product that will be adding to the product table. Then I should have a page where I can add colors and sizes and so on. But how do I do that? When I add the product I set a price in the productdetail table and colorId and sizeId is sett to null. If I add a color to the table how do I do this the easiest way? I will not have a product where both colorId and sizeId is null. I have this SP and table structure. Then I'll do the same when I add sizes.
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Dec 1, 2010
Banging my head with this one...
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Dec 13, 2010
I would like to check whether a folder exists or not if not create. I'm sure this folder exists, but for some reason I get "false" when I check with "Exists" method.
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Jan 4, 2010
I'd like to use a simple switch to display one image or another but I need a way to find out if the image exists.
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Dec 21, 2010
I am very new to this and have watched a lot of the videos. While trying out VWD2010 and SQL2008 Express, I come across many things, I just don't know how to do. Here is the latest:
I have a Table
UserId - Int - AutoIncrement
FirstName - Var(10)
LastName - Var(10)
I also have an ASP web page that allow the user to enter a first name and last name. It also has a button to submit. What I would like to do is have a Select statement check to see if the name already exists, then send a comment back to the user via a label. If it doesn't exist, then I would like to Insert the info and then again inform the user via label.
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InsertCommand="INSERT INTO User(LastName, FirstName) VALUES (@FirstName, @LastName)"
<InsertParameters>
<asp:ControlParameter ControlID="tbFirstName" Name="FirstName"
PropertyName="Text" Type="String" />
<asp:ControlParameter ControlID="tbLastName" Name="LastName"
PropertyName="Text" Type="String" />
</InsertParameters>
<SelectParameters>
<asp:ControlParameter ControlID="tbFirstName" Name="FirstName"
PropertyName="Text" Type="String" />
<asp:ControlParameter ControlID="tbLastName" Name="LastName"
PropertyName="Text" Type="String" />
</SelectParameters>
On the code behind, I get lost. (Obviously this doesn't work, but I don't know how to go about getting a results back. Protected Sub bSubmit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles bSubmit.Click
SqlDataSource1.Select(DataSourceSelectArguments.Empty)
(get a return)
(check return value, if <>0 then
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End Sub
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Oct 27, 2010
I want to be able to check if a value exists before inserting a new record in the table. I am taking a nvchar value from a textbox and want to compare it to existing values in the table. My codebehind is:
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It is also important to filter down by CompanyID which is held in a Profile table. So the value can be equal in records where the CompanyID does not equal the loggedin Profile.CompanyID. So a user with a CompanyID of 2 can have a value in the table for SubType as "laptop" but a user with CompanyID of 3 can still enter "laptop" if there is no match for "laptop" and companyId = 3.
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Jan 25, 2011
Is there any benefit (performance wise) to check if a record exists before updating it or do I just go straight in with an UPDATE WHERE?
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Oct 13, 2010
I would like to check and see if a record exists before doing an insert. Here is the code I have tried:
[Code]....
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Dec 4, 2010
I am developing a website in ASP.NET with SQL SERVER as backend.
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Jan 6, 2011
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string mstitle = title.ToUpper();
string dlpath = [the server path] + msid + mstitle + ".mobi";[code]....
(there are also versions with .txt and .pdf) the file definitely exists at the location in .txt, .pdf and .mobi extensions. however, the .mobi version simply won't work i get an error 404 resource not found. mystifyingly, the pdf and txt versions work perfectly.
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Sep 24, 2012
I have one text box in my page and 1 button
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Aug 19, 2010
I have a form for data entry which has a checkbox for featured item.
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Feb 2, 2011
I'm getting a "no data exists for the row/column" error when i am giving wrong value in key column and press button to import data from excel,how can i fix this error and avoid collapsing the application.
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Aug 17, 2010
I am having a slight problem with a feature I am trying to get working on a website I am doing. I keep getting the "No data exists for the row/column" error. And the problem appears to be with this line of code:
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Feb 28, 2011
I have some code with a connection string going to a mdb, the query looks correct to me and I know that the data stored in the table exists but when I run the query in my code it says: No data exists for the row/column.
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It has crossed my mind that perhaps the way the data is put into the program is not compatible with the data in the database, I don't know if that is a valid thought though.
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Mar 3, 2010
I am using a sqldatasource for filling one GridView and on page loading or before taking any action, there is no data (default value=null) and normally the datagrid is empty (using emptydatatext="no records found etc etc...").. Issue is I can not see the header of that grid in empty case, but only the emptydatatext!
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[URL]
P.S. I'm not usign DataTable as a DataSource, but sqldatasource (from the Data Controls), and I want to show header, when sqldatasource is null or empty ?!
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Oct 15, 2010
I have 2 tables:
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Am I on the right way with statement below, though I got syntax problems
[Code]....
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Aug 12, 2010
I have aregistration form where the user enters, among other things, a username. The form must make sure that the username is not already taken before the user submits the info.
Here's my code so far in the .aspx.cs:
[Code]....
I'm not sure how to call this function from the .aspx part... .
[Code]....
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Dec 9, 2010
I have a page with a simple textbox, when an OrderNo is entered in te textbox the page is populated with 2 or 3 gridviews depending if the order has items reserved or on back order.
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how to check whether a dropdownlist contains particular value for the below codei have a value name
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I need to check whether table named 'CSE' is existing in database or not. if it exists, i want to drop the table 'CSE'.
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May 7, 2015
check if variable exists in dataset ?
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Mar 18, 2010
Test to know if a file exists already or not using DetailsView with c#?
DetailsView :
DetailsView source :
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Insertclient.aspx.cs" Inherits="Insertclient" Title="Insert client" %>
<%@ MasterType VirtualPath="~/MasterPage.master" %>
[Code]....
before inserting a new Cod-client i want to know first if the Cod_client exists already or not and where to insert that cod in my application ,
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Feb 26, 2010
I want to create C# code that checks a hyperlink in a repeater and checks if the file exists. If not, the hyperlink is not visible. The path and document ar pulled from a sqldatasource:
[Code]....
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Feb 11, 2010
how can we determine the exactly datagrids row and column that exists a button that has been pushed?
Protected
Sub ela(ByVal
sender As
Object,
ByVal e
As
System.Web.UI.WebControls.DataGridCommandEventArgs)
' Dim id As Integer = datagrid1.DataKeys(CInt(e.Item.ItemIndex))
Dim id
As
Integer = e.Item.Cells.GetCellIndex
Response.Write(ID)
End
Sub
but how exactly we determine the row and the column?
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