ADO.NET :: Write A LINQ To SQL For Searching Database?
Feb 7, 2011I'm trying to write a LINQ to SQL for searching my database. What's the best method or LINQ to SQL comparing condition?
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ADO.NET :: Searching Through Multiple Tables (Linq To SQL)?
Aug 12, 2010I have a couple tables that are kind of unrelated - id like to search through both of them and create a type that i can sift through later
something like this doesnt work
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I basically want to create a list of "AnimalSearchResults" that contains all dogs and all cats that have that name Whats the best way to do something like this?
Verbatim - Why Write @ Before Sql Queries - Select Data From Database Then Write Query?
Oct 1, 2010Suppose we want to select the data from the database then we write the query for that. Example:
SqlConnection con=new SqlConnection(Connetion name) string selectPkId = @"SELECT PK_ID FROM TABLE" SqlCommand cmd=new SqlCommand(selectPkId ,con);
So,my question is that why we basically use @ before the sql query.If I don't use @ before that then it again work fine (does not give any error), then what is need of using "@"?
Comparing And Searching For A Username To A Record In A Database?
Jul 1, 2010For this applications, I will have a table that has a list of users who are "moderators" and they are able to see a part of the website that regular users cannot. I will NOT have a login or anything like that - I have a table that lists all the users who are moderators and if the user who is logged in is a moderator they simply see more of the website.
Right now I am able to get the username of the logged user (these are users who log into a Windows machine, and I simply get their login using a method from System.Security).
The thing I have no idea how to do is actually compare the username to the username in the database that I have. can anyone point me to a tutorial or something that searches through a database to compare the given value and see if there is an identical one in a specific database? I don't want the user to see the database, this is all done "behind the scenes".
DataSource Controls :: Searching Database With Special Character?
Apr 12, 2010I have a table that contain special characters and when the user search for nguyen I want to return string that contain Nguyễn or nguyen or any other nguyen variations.
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Forms Data Controls :: Searching Database By A Dropdown List AND Text Box
Aug 10, 2010I am very new to coding in asp.net, I've never done anything before, but heres my problem, I have a Microsoft SQL Server 2005 Database, and basically I need to be able to search that database by 3 different things, basically there is tons of data, and I need to be able to search by a member ID, a location, and a group name So basically I wanted a drop down list, with these 3 column names, and than a search box where you can actually type in what you are looking for, than have the results display, I have been trying to do this with gridview, but I can't seem to get it to work correctly
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View 2 RepliesADO.NET :: How To Write The SQL In LINQ
Aug 20, 2010how to use a LINQ query in the following scenario and if we can do it without any enumerators:Suppose we have an Employee table and a Dept table where we have DeptId as a foriegn key reference in Employee table. So we can write a SQL like this.SELECT * FROM Employee WHERE DeptId in (SELECT DeptId FROM Dept WHERE Location = 'LK') Here, in the where clause, we might get multiple values. Is it possible to pass a list of values to the where clause in Linq?
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Dec 6, 2010the cold as follow:
string[] ids=new string[]{"1","...","x"};
var result=db.table0.AsQueryable();
foreach (string id in ids)
{
result=result.Where(p=>p.patentId==int.Parse(id));
}
I need the result is OR, not AND,
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Oct 13, 2010How I can write following SQL query using LINQ. There is no default constraint define for the ID column so we have explicitly pass the NEWID().
I want to replicate the products of a company to another company.
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ADO.NET :: Linq To Sql Determine Which Tables To Write?
Sep 9, 2010I was wondering how Linq to Sql determines which tables to write to when given primary/foreign Key relationships. I can (hopefully) better explain using an example. I have the following tables:
Customer CustomerStatus CustomerType CustomerAddresses
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Can anyone please explain to me how linq to sql determines which table(s) will be written to based on the entities above?
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[Code]....
One of the pages works with this code and the other doesn't. The only difference is that the project in which it does work employs a data control tool (ListView) and a custom profile provider.
DataSource Controls :: SQL Query Re-Write In Linq To Entity?
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C# - How To Write A Single LINQ To XML Query To Iterate Through All The Child Elements
Aug 14, 2010I am developing asp.net mobile application. I am using XML as a database. I am querying on the XML to access the required elements & attributes by using LINQ to XML in .net. I have the follwing part in my XML file.
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The similar logic I need for the above defined XML part. In the above XML I want to write the LINQ to XML query which can access the NAME attribute of the 'VALVE' node (<VALVE NAME="PWV">), then it should access the text between 'DISPLAY-NODE' (<DISPLAY-NAME> Production Master Valve </DISPLAY-NAME>), & then it should access the all the attributes of the 'COMMAND' node dynamically ( <COMMANDS USE-TEMPLATE="TRUE" TEAMPLATE-NAME="ValveCommands.xml"></COMMANDS>). All these I want dynamically without explicitly specifying the name of the child node as well as name of their attributes ( similar to the way I written the above query ) Can we write such a code by using LINQ to XML ? It will be better if we can write code for above issue in a single logic ( similar to the way I written the above query ).
Web Forms :: Trying To Write A Linq Query That Has Multiple Where Clauses Depening On User Input?
Jan 27, 2010I have a quick Linq to SQL question. I am trying to write a Linq query that has multiple where clauses depening on user input. What I would intuitively code is:
Dim arrTerms As Array = txtUserInput.Text.Split(" ")
Dim q = From newsitem In db.MyNewsTable _
Where newsitem.Contains(arrTerms) _
Select newsitem
Listview1.DataSource = q
Listview1.Databind()
Unfortunately, though, the "Contains" operattor does not accept an arraylist, or array, or anything but String.
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ADO.NET :: Mapping Access Database To SQL Database Using LINQ?
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So i establish in the Application_Start Method the connection the database.
[Code]....
In the Application_BeginRequest Methode, i analyse the UserHostAddress of the Request:
[Code]....
With the debug mode, i know, that the app is executed. But sometimes the pages writes at every refresh the line in the database, but in most cases there is no entry in the database.
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Aug 17, 2010Im pretty new to NUnit and am beginning the process of setting up my tests. Some of these test involve a database, specifically checking a particular value against a value in a database and if its not greater than the last retrieved value, flag an error. Whats the best way to test in this scenario ? should I write one value to a database then create another value thats out of sequence and run a database query ? This would involve putting a known value into the table, then running the query with another value.
There is no rollback attribute for nunit, so I gues using TransactionScope would work, that way I could return the database to a known state after the test. There tables have foreign keys so that means adding a lot of extra 'dummy' data first to some of the other tables. Is this sort of 'testing' the best way ? I basically need to perform the test based on an existing data value and I guess this must be pretty standard stuff, so whats the best way ?
As I understand it, the tests should be self contained, so any data i insert into the database during the test should be removed afterwards, is this correct ? If so, it means I need to insert test data into 6 additional tables just to test one function, then remove it after the test has completed, is this the normal way to to this ?
How To Get And Save/write File (.doc, .xls, Etc) In Database In Binary Format
Mar 4, 2010Actually I want to get a file and save its length, its MIME type, content into database in binary format.
It saved but not open in hander in correct format.
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