I was use SQL Connection to Access Data Base in Past and When Select Data in DataSet make it static & than it can avaliable on class level.I click on Edit Button its avalibale because its Static.Than now i think try it with LINQ it's provide easy Access to Data Base; in Insert/Update/Delete than SQL Connection it look's me great when i use it.
But i don't know how to make var Query Static for its class level avaliability. i can define it by my code
public static DataSet DsCustomers;
protected void Page_Load(object sender, EventArgs e)[code]....
in LINQ example i want to make sure that SelectQuery is avaliable on Class level & want to make it static
I have this query for getting data through Entity Framework, which works today. Thing is, i want to create the query dynamically, i.e build it up in blocks, but i can't figure out how exactly to do it. I believe if i can somehow save one of the values that i retrieve in the beginning i can do it, but now i retrieve it twice (probably a bit slow as well? Unless the compiler fixes it before quering). Makes sense? Here is the LINQ:
is it possible to make a Linq query dynamic in the following pseduo code (to show what I'm trying to do)
[Code]....
where a2 and a3 and a4 are being populated from user controls and only one will apply. So query is done by state, zip or by city, but not by more than one, so the other two would be null. So the operator is really "OR" but I haven't found anything on a "or" or "whereOr" operator.
I've build a linq query.But i want a random selection so its not always ID : 1,2,3,4,5,6 How can i randomize this var? I like to bind it to a repeater.//TagCloud:
Random rand = new Random(); var tc1 = from i in JumpTide.cms.menu.GetMenuItems(32) select new
I am new to Visual Web Developer Express Edition 2008 as well as to asp.net. I think this is very simple question to be asked on this forum. But, i can't find a solution for this. I want to make TextBox Component as static through IDE. i don't want to do this manually. I have checked Textbox component's properties through Property Window. But, i haven't seen the property making a component as static.
I want to make a static Status bar on webpage or Masterpage. I want to throw the meassge to status bar like
New Address has been inserted ID: 520 Address ID:530 Updated TextBox Name is Blank. or any other mathod. I want to show massage on Single Constant Place.
I am facing a big problem with simple linq query.. I am using EF 4.0..
I am trying to take all the records from a table using a linq query:
var result = context.tablename.select(x=>x);
This results in less rows than the normal sql query which is select * from tablename;
This table has more than 5 tables as child objects (foreign key relations: one to one and one to many etc)..
This result variable after executing that linq statement returns records with all child object values without doing a include statement.. I don't know is it a default behavior of EF 4.0 . I tried this statement in linqpad also..but there is no use... But interesting thing is if I do a join on the same table with another one table is working same is sql inner join and count is same..but I don't know why is it acting differently with that table only.. Is it doing inner joins with all child tables before returning the all records of that parent table?
So the BlogPostTags table only contains 2 fields, BlogPostID and TagID.
When i run the query above i get 3 results back. Same blogpost 3 times but with 1 tag in each. It should return 1 post with 3 tags. The problem lies in the Tags query above.
I have a question about whether it's possible to make the ReportViewer's toolbar static while scrolling the report content. I have a ASP.NET web app and I use a ReportViewer control in a page to display the report, when a report is displayed in the ReportViewer oftern the user wants to scroll down to the bottom of the report, but then they have to scroll back to the top to use the toolbar to print or export. Is there a way to make the toolbar always static and only the report content scroll?
I have a web app for our golf club. When I compute handicap index for each golfer, I have to select the most recent scores and then a subset of those scores depending on how many rounds of golf the golfer has played. All the scores are entered into a single SQL Express table called "Rounds". Verbally, this is what I'm trying to do:
1) select the twenty most recent golf scores (sort on date descending, "take(20)") [if less than 20 records, then select all available];
2) for this set of records, select the 10 lowest scores (or smaller number if golfer has less than 20 rounds);
3) compute the average round differential for the subset of records, etc. to calculate handicap index (this step is working ok...)
My current VB code has this LINQ query (which is flawed -- it selects the lowest handicap differential scores of ALL records for the filtered user):
[Code]....
How do I modify this query to accomplish items 1) & 2) above? It seems this should be simple, but my experience with queries is still limited.
List<string> EmailId= { ....} Now I have a db table Users. I need to select all users whose email exist in the above list. In sql we could write "where emailid in ('email1', email2' ,...)"
how to do this in linq to sqlquerable<Users> existingUsers = Users.getTable().where (u=>u.emailaddress in EmailId). I want to do some thing similar
I need to figure out how to express this in linq to sql:I have one or more records that contain what is essentially a wildcard sql parameter, like '100_-___-2', which should match 100[any 1 char]-[any 1 char][any 1 char][any 1 char]-2, for example. Each login will have one or more of these 'datamasks' associated with it.I need to write a query in linq to sql that does something like:
select * from something where fieldA = 'someValue' or fieldB = 'someValue'
so far, simple, but I also need to restrict the returned records to only those that match the user's 'datamasks'. I'm not sure exactly how to translate this to linq to sql... here is what a working query *without* the datamasks part looks like:
[Code]....
I need to tack on the datamasks part... can I do it right there in the same statement? or do I need to do a foreach loop on the datamasks records and append a new && condition for each one? hmmm... just thought of that as I was writing this.. I'll try that out. But I'm posting this anyway for more input... I guess that would look something like:
I need to use Union for below Linq queries. I could use Union it if it was simple "select new whith{" but Now that I Specified Class, I encounter Error using union
Table User (UserID, Username) Table Admin (AdminID, Username) Table PM (PMID, SenderID, Sendertype, RecipientID, RecipientType) Get all Information from PM if SenderType == 'A' join SenderID to Admin-Table, get Username if SenderType == 'U' join SenderID to User-Table, get Username if RecipientType == 'A' join RecipientID to Admin-Table, get Username if RecipientType == 'U' join RecipientID to User-Table, Get Username
I have a datakey that I'd like to query from my GridView instead of looping through all the rows and comparing the key of each row. So I was wondering if it was possible to just do a linq query on the gridview (not datatable) and filter with the datakey.
I need to filter LINQ query using comboboxes and textboxes. The problem is I can't manage to get the result and I always get the empty gridview (used for showing filtered data). Can anyone help me why am I getting no results at all? I've checked the debugger and the data sent to query is valid, although, I'm not sure about "string.Empty" value.
SELECT Sum(ABS([Minimum Installment])) AS SumOfMonthlyPayments FROM tblAccount INNER JOIN tblAccountOwner ON tblAccount.[Creditor Registry ID] = tblAccountOwner. [Creditor Registry ID] AND tblAccount.[Account No] = tblAccountOwner.[Account No] WHERE (tblAccountOwner.[Account Owner Registry ID] = 731752693037116688) AND (tblAccount.[Account Type] NOT IN ('CA00', 'CA01', 'CA03', 'CA04', 'CA02', 'PA00', 'PA01', 'PA02', 'PA03', 'PA04')) AND (DATEDIFF(mm, tblAccount.[State Change Date], GETDATE()) <= 4 OR tblAccount.[State Change Date] IS NULL) AND ((tblAccount.[Account Type] IN ('CL10','CL11','PL10','PL11')) OR CONTAINS(tblAccount.[Account Type], 'Mortgage')) AND (tblAccount.[Account Status ID] <> 999) [code]....
