When a user enters a value I want to check against the other values in the database before allowing the record to be inserted.
It is a nvarchar type column.
Is it best to use a unique constraint (if so, how) or what would be the way to programatically check to make sure this name does not exist. It is not a username, just a name value that will be used in routing.
I am developing web applications using csharp. How can I ensure that some records are not picked using sql. I have a table with records and its content differ from each other dot ".". Table is as follows
Student1 Details2 Details2
1 Musol School Books
2 Musol School Books.
3 Golpp Temo Books
4 Golpp Temo Books.
How can I select records without dot "."at the end only. For example
1 Musol School Books
3 Golpp Temo Books
I have used sql but I am not getting it. My sql is as follows
select * from studentDD where Details2 !=".%"
It is not working.
Is there a validation expression or any other way to check a birthdate entered to ensure the date entered makes the person "at least xx years of age" as of the current date? We have a registration form that asks the birthdate and we need to have a date validation that 'error messages' the user if they are under the minimum age.
View 5 RepliesI have in my page an edit button and textboxes. I want to edit one single record from the database to these textboxes. I wrote the following code, when I click the edit button then I have the results. The results load in my textboxes. But when I try again to run the page with the same ID for second time then I have this error 'Specified cast is not valid.' What's going wrong? I used int ID=3; to get the 3rd record in this example
[code].....
I have a data table with 20 records i have to get the 15 unique records randomly and have to store it in Arraylist but now problem is that how i select the 15 unique records from Data table each time .
View 9 RepliesThe website is over half way done and the functionality for the blog is (except for adding posts) is already implemented and working correctlyI have a SQLExpress 2008 backendBlog posts are rendered on the page with full HTML markup within a label control.
All of the above is done and working. Though I am essentially new to creating websites with ASP.NET, CSS and SQL, I am sure that I could simply carry on and make a login page with some controls that would allow me to add records (blog posts) directly to the database on the host server. However, I am fearful of doing this because I know that malicious code can be passed in this way. Also, because of my lack of knowledge, the only way that I know of to pass the code from a control to the database is to disable validation for the page the control is on. Without a doubt I do not want to do that.
So what are my options for getting blog posts into the database? Is it safest for me to fully create the post in html and update a copy of the database that resides on my local machine? If I do it this way, how can I merge the records from the database on the local machine with the records on the remote server?
Is it possible to Extend Textbox to have a Unique Name ? I have tried using UniqueID poperty,but this is not accessible with Request.Form("UniqueID")
View 2 Repliesi like to have unique ids for textboxes and hidden filds .is there any property which will give unique id in asp.net ?
something like
<asp:textbox id="ctr001_1" runat="server" uniqueid="textbox" />
i need code to be able to check if (the date in a textbox) is already (used) in the database or not, if yes then give an error message!!
i am using asp.net 3.5 c#
what the best way to create text boxes in my loop here so that the IDs are unique instead of just "TextBox" for all of them. I need to add up the Price based on the Price per unit and the Quantity.
My items are loaded from a database so there could be any number of them, so I need to generate the fields on the fly. I was thinking maybe an array of fields could be used like in a form application, or is this not the right way to go?
Here is my code:
[code]....
the date in sql database is in yyyy-mm-dd format . i have a textbox where in date is eneterd in dd/mm/yyyy format i need to check the textbox date with the database date. how do i do it i tried converting the textbox date using format function but it didnot work
[code]....
I want to check for duplicate records,if the record is already inserted then "record has already been inserted" should appear or else if its a new record then it should be inserted.. This function is inserting even if it exists and showing the error msg..
Sub CheckForDuplicateRec()
Dim da As SqlDataAdapter
Dim ds As New DataSet
Dim dt As New DataTable
cmd = New SqlCommand("Select * from Table3 where Name='" & txtname.Text & "' AND FName='" & txtfathersname.Text & "' AND MName='" & txtmothername.Text & "' AND Add1='" & txtadd.Text & "' AND Add2='" & txtadd2.Text & "' AND Add3='" & txtadd3.Text & "'
AND City='" & txtcity.Text & "' AND State='" & ddlstates.SelectedValue & "' AND Pincode=" & txtpincode.Text & "", con)
da = New SqlDataAdapter(cmd)
da.Fill(ds)
dt = ds.Tables("Table3")
If dt.Rows.Count = 0 Then
cmd = New SqlCommand("Insert into Table3 (Name,FName,MName,Add1,Add2,Add3,City,State,PinCode) values('" & txtname.Text & "','" & txtfathersname.Text & "','" & txtmothername.Text & "','" & txtadd.Text & "','" & txtadd2.Text & "','" & txtadd3.Text & "','"
& txtcity.Text & "','" & ddlstates.SelectedValue & "','" & txtpincode.Text & "')", con)
cmd.ExecuteNonQuery()
Else
lblError.Text = "Records already exists"
End If
End Sub
I m creating a project in which only two members can register by using one perticular ID as a Sponser ID. I am using VS 2008 with C# language and LINQ as Query. At the point of insertion for register entries, i invoke a method BINARYCHECK which contains LINQ query. I passed _txtSponserId as a parameter to the BINARYCHECK method. Now in the function definition section i have written LINQ query which checks in database that if particular sponser ID is bieng used maximum of two times by any other user. But i only can check one record in the database. I want to check for all the records. Below is my code:
var a =UserBl.BinaryCheck(_txtSponserId);//function call
public static List<tblUser> BinaryCheck(string s)
{[code]....
This code doesnt check for how many times SponserID is Used. This is why i get i=1 and return data even if SponserId is used only One time. On the contraty i want to implement that if SponserId is used only once in database then function should return null other wise it shold return 1. How to do this?
How do I generate a unique number in c# without the database? (max 17 digits). EDIT: digits only.
View 2 RepliesHow to get Unique ID of LDAP logged in User? Is GUID is the unique id of each user?
View 1 RepliesI currently do something like...
[Code]....
Now I know this works.. but what is the right way to have this? I don't want to be checking something twice instead of just having it written out once.
I have a webform that writes respondent info to a sql data base. I want to send a email campaign and use a unique identifier so that if
1. joe clicks on his link http://www.test1.aspx?209
2. tim clicks on his link http://www.test1.aspx?603
that when they click the form submit the data gets written into the correct row where 209 and 603 are their respondent numbers already in the data base. This is my first attempt using c# and I couldn't find anything in my books about it.
Is GUID (globally unique identifier) really unique, or it can be duplicate.
System.Guid.NewGuid().ToString()
How generate the unique no. 1,2,3 and so on .... on button click of each new user ..
the code mentioned below is a readwrite coding in vb.net ...
but the problem is it generate the same id for different users on button click event... but i want the no. of times button clicked the new ids will be generated
[code]....
im creating a database that needs a unique constraint on columns. does anyone know how to add this within the northwind database?
View 4 RepliesI've got a database table with a very large amount of rows. This table represents messages that are logged by a system. Each message has a message type and this is stored it it's own field in the table. I'm writing a website for querying this message log. If I want to search by message type then ideally I would want to have a drop down box listing the message types that have come up in the database. Message types may change over time so I can't hard code the types into the drop down. I'll have to do some sort of lookup. Iterating over the entire table contents to find unique message values is obviously very stupid however being stupid in the database field I'm here asking for a better way. Perhaps a separate lookup table which the database occasionally updates listing just the unique message types that I can populate my drop down from would be a better idea.
The platform I'm using is ASP.NET MVC and SQL Server 2005
I am generating a unique Ref number using this sql statement: SELECT REPLACE(STR(CAST(CAST(NEWID() AS binary(5)) AS bigint),12),0,0) as REF Subsequently, I need to insert this REF into sql database table in stored procedure. Here is what I did in my stored procedure:
USE [iBankRecords]
GO
/****** Object: StoredProcedure [dbo].[stp_addPayee] Script Date: 07/05/2010 21:57:07 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROC [dbo].[stp_addPayee]
(
@CUSTID char(10),
@PAYEEACCNUM nvarchar(20),
@PAYEEACCTYPE char(10) ,
@PAYEENAME char(20),
@PAYERINITIAL char(20),
)
AS
DECLARE
@ReturnValue int
INSERT INTO PAYEE (CUSTID, PAYEEACCNUM,PAYEEACCTYPE,PAYEENAME,PAYERINITIAL, REF)
VALUES (@CUSTID,@PAYEEACCNUM,@PAYEEACCTYPE,@PAYEENAME,@PAYERINITIAL, REF)
IF @@ERROR<>0
BEGIN
PRINT 'ERROR'
SET @ReturnValue=1
RETURN @RETURNVALUE
END
ELSE
BEGIN
SET @ReturnValue=0
RETURN @RETURNVALUE
END
May I know how do I have generating a unique ref num and inserting the REF into the above statement?
How can I get unique session ID for every unique user who logs in ?? I'm using asp.net/c#
View 1 RepliesHow To Display Data In Following Format?
In the Format below abc has multiple occurance which count is displayed in brackets as 2669.
[code]....
I am using a form to add and edit record of database.
In Add case my email box has no value. I have used customservervalidation to check the given email address with previous database records.
In Edit case my email box is populated with data from database.
When i click save button in both cases my customservervalidation method invokes and checks the given value. it works fine for new/add case but in edit case it checks with itself also and says duplicate email... pointing own record...