ADO.NET :: Query Dynamic Table In LINQ?

Jan 17, 2011

I have a table created on the fly. The table structure is dynamic.

This is the table structure generated by the end of year 2010

DealerCode, 201010, 201011, 201012

This is the table structure generated by the end of Jan 2011

DealerCode, 201011, 201012, 201101

What I need to do is selecting all data and then bind it into a gridview

To build a LINQ query, we need to drag the table into dbml file first. As we don't know how the table look like, can we add it in dynamically? Are there any other solutions?

View 1 Replies


Similar Messages:

ADO.NET :: Dynamic Table Name Linq-to-sql Query?

Sep 20, 2010

I am writing a function in which i generate autocode in specific format i want to make this function generalize so that i send tablename and columnname parameter and function return the next code. I am using linq to sql with MVC e.g. i want to make table name and column name dyanamic

[Code]....

View 3 Replies

ADO.NET :: Dynamic LINQ Query / Use "if Statement" In Linq Query

Feb 11, 2011

I want to use "if statement" in Linq query. How can I do this situation?

For example:

if txtAge.Text=="", I will not use that in Linq Query.

else txtAge.Text!="", I will use that in Linq Query.

View 8 Replies

Generate Dynamic LINQ Query In SharePoint

Nov 25, 2010

I have a page with filters and accordingly to what the user selects, it has to generate a query. I'm using this code:

[code]....

However Linq-To-Sharepoint doesn't convert most of this to CAML and the list I'm querying has more than 50000 items. It takes about 4-8 seconds to retrieve the items which is not acceptable.

I've been trying to generate a dynamic query but so far I haven't been able to get it to work.

With AND and OR operations to generate the query I could put all those conditions on code and increase performance.

View 1 Replies

Simplify LINQ-To-Entity Query, And Make It Dynamic

Dec 4, 2010

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:

[code]....

I.e based on if various variables have values.

View 1 Replies

ADO.NET :: Make A Linq Query Dynamic In The Pseduo Code

Sep 9, 2010

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.

View 9 Replies

ADO.NET :: Linq Search - Dynamic Query Based On User Input?

Jan 12, 2011

I have two text boxes for the user to enter UserName & First Name, both these fields are optional and not mandatory to fill.

once the user presses the Search button, i execute the following query to fetch matching records.

[Code]....

The problem is, in cases where User leaves both the textbox or one of the textbox empty/blank, in that case that particular field should be removed from where clause.

More like if something is entered then search for that particular record otherwise search for all the records.

View 2 Replies

ADO.NET :: Linq Query To Create HTML Table

Dec 26, 2010

I have a basic Linq query and what I need to do is query the DB then display the data in HTML.Typically I would bind this to a control but in this instance I need to actually generate the HTML in the code behind page.The Linq query is very basic something like this with Northwind:[Code]....

Instead of binding that to a gridview how can I write out the html... I'm sure I can use stringbuilder or smilar to create the html but I'm not sure how to get he data in the tables... foreach datarow in?

View 5 Replies

DataSource Controls :: Compile In Order To Get The System.Linq.Dynamic Namespace / Dynamic Linq Error

Apr 20, 2010

I've added the Dynamic.cs file to my project and have set it's Build Action = Compile in order to get the System.Linq.Dynamic namespace.

However, when I try to use any of the new code I am getting an ambiguous call error; see below.

[Code]....

View 2 Replies

Select Query In LINQ Based On Foreign Table

Mar 2, 2011

I have 2 Tables , OrderDetails and Requests In my LINQ to SQL dbml file. OrderDetailsID is a foreign key in Requests Table. I want to write the query to get the sum of UnitCost from OrderDetails based on OrderId. And If there is a row in Requests Table for each OrderDetailsID, and the Requests.Last.RequestType="Refund" I want to reduce the total refund amount from the main sum otherwise If there is no row based on OrderDetailsID, add to sum. Here is the way I implement that. I am looking to prevent using "For each".

iRefund = (From od1 In dc.OrderDetails _
Where od1.OrderID =1 _
Select od1.UnitCost).Sum
Dim objOrderDetails = (From od1 In dc.OrderDetails _
Where od1.OrderID =1 _
Select od1)
For Each OrderDetail As ORM.Entities.OrderDetail In objOrderDetails
If Not OrderDetail.Requests Is Nothing Then
IF OrderDetail.Requests.Last.RequestType="Refund" Then
iRefund -= OrderDetail.UnitCost
End If
End If
Next

View 1 Replies

ADO.NET :: Table Collection Missing In LINQ Query / DataContext?

Aug 13, 2010

I'm new to LINQ and have a problem with my query not showing me the Table Collection. I manually created my Cart class and specified the table attributes on each property (works fine for inserting records via LINQ see below). DataContext dc = new DataContext(Conn);

var q = (from c in dc.NOTABLES?? where ((c.UserID == userID)) orderby c.CreateDateTime Based on examples I would expect to see dc.Cart But I don't, so I tried to access it via dc.GetTable<Cart>() which at least gets me data but doesn't seem to convert the rows to my Cart object since this:
foreach (var cart in q) Log.Info("UserID: " + cart.UserID + " CartID: " + cart.ID.ToString());
blows up with a "Specified Cast is Not Valid" exception.

No Problem Inserting Also, I had no problem inserting data into the database:

DataContext dc = new DataContext(Conn);
Table<Cart> Carts = dc.GetTable<Cart>();
Cart aCart = new Cart();
aCart.UserID = userId;
aCart.Description = description;
aCart.CreateDateTime = System.DateTime.Now;
aCart.UpdateDateTime = System.DateTime.Now;
Carts.InsertOnSubmit(aCart);
Carts.Context.SubmitChanges();

View 1 Replies

C# - How To Create A Pivot Table With Dynamic Column Using Linq Tree Expression

Feb 8, 2011

i'm writing an asp.net C# web application; i have an in-memory datatable named 'table1' having three columns 'country', 'productId' and 'productQuantity'; i want to pivot that table in order to obtain a new table (suppose 'table2') having the first column 'country' as a fixed column and a dynamic number and names of columns 'product_1', 'product_2', ..., 'product_n' according to the total number of products existing in 'table1'; the first column 'country' must contain the country name; the dynamic generated columns 'product_1', 'product_2', ..., 'product_n' must contain the productQuantity that has been selled for each specific product in the specified country

i'm using Linq query expressions to write the code; the problem is that i cannot hard-code the names neither the values of the products; i cannot predict how much products exist in the datatable;

for now, i'm testing the results using the following expression :

[Code].....

i'm giving an example on how 'table1' looks like and how 'table2' must look like :

view example image of the two tables table1 and table2

View 2 Replies

DataSource Controls :: Update Table Field With LINQ To SQL And Query String

Jul 11, 2010

I am trying to update my table ARTICLES and it has a field COUNTER, Everytime a user enter this ARTICLES, the page_load event runs a LINQ to SQL query taking the QueryString as parameter, increasing the COUNTER field in 1.

[Code]....

View 2 Replies

Forms Data Controls :: Sql To Linq Query / Looking To Translate An SQL Query Into Linq?

May 28, 2010

I'm looking to translate an SQL query into linq

INNER JOIN Usrs ON
SAQ.UserId =
Usrs.UserId AND Scan.UserId =
Users.UserId

I'm not sure how to include the "AND" in the LINQ statement.

View 3 Replies

DataSource Controls :: SqlDataSource And Parameters Query / Trying To Accomplish Is Building Dynamic Query

Aug 22, 2010

1. I have a GridView on my page and it uses sqldatasource with parameterized query. What I want to do is, on page load (where nothing has been selected so no parameter supplied), I want it to query everything (something like SELECT * FROM [this_table]) but since my SelectCommand is something like

SELECT * FROM [this_table] WHERE [this_column] = @someParameters AND [that_column] = @someParameters.

Can I play around with default value to achieve something like that but how ? Now, when the page loads, it doesn't show anything (No Gridview).

2. On my page, I made something like (username, gender, address, and more) and one single search button. That means, no single control enable auto postback. What I am trying to accomplish is building dynamic query

(if username specifed -> SELECT * FROM [this_table] WHERE [username] LIKE @username).

If both username and gender are specified (SELECT * FROM [this_table] WHERE [username] LIKE @username AND [gender] = @gender) and you know the rest. How can I do this using GridView and SqlDataSource ? To my knowledge, I can only specify one SELECT statement in a sqldatasource.

View 11 Replies

ADO.NET :: Build A Linq Query / Linq Random Selection?

Sep 14, 2010

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

[code]...

View 1 Replies

DataSource Controls :: How To Convert Sql Query Into Linq Query

Mar 10, 2010

select Groupid,GroupName,onorusername from palgroup where groupid in (select distinct Groupid

View 5 Replies

Dynamic Where Condition In Linq To Sql Or Linq To Entity?

Dec 24, 2010

We would like to perform something like this

string strCondition = "FirstName=='abc'"
from p in People.Where(strCondition) select p

In our architecture we are usign both Linq-Sql as well Linq-Entity. So please give some thoughts wehter it is possible or not and is there any way to perform this?

View 2 Replies

Linq Query Returning Less Records Than Sql Query?

Mar 19, 2011

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?

View 2 Replies

Linq Query - How To Select Inner Query Into List

Oct 17, 2010

I am writing a linq query to select a blogpost,

[code]....

The blogpost i am testing got 3 tags attached to it. The table structure is:

(table)BlogPost -> (table)BlogPostTags <- (table)Tags

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.

View 1 Replies

Forms Data Controls :: Adding Dynamic Button To Dynamic Table

Aug 10, 2010

I have a dynamic Table which contain 8 rows and 8 Colums

Table t = new Table();
TableRow rr = new TableRow();
TableCell cc = new TableCell();
and in the each Cell CC I add a dynamic Button(Or Linkbtn)
LinkButton LB1 = new LinkButton();
LB1.Text = "AM";
LB1.ID ="Link1";
cc.Controls.Add(LB1);
rr.Cells.Add(cc);
LB1.Click += new EventHandler(LB1_Click);
t.Rows.Add(rr);

i have a table with 8 rows , 8 colums and each cell contain a LinkButton (which diffrent in IDs) I want to add Lable in the same cell of this LinkBtn(LB1) which it clicked but I cann't What shoud I write here?

void LB1_Click(object sender, EventArgs e)
{
// throw new NotImplementedException();
}

View 1 Replies

Data Controls :: How To Add Dynamic Rows Together With Non-Dynamic To Single GridView Table

Dec 11, 2013

I have a Webform with a TextBox (Static) and 3 TextBox (Dynamic - based on the following article: [URL].... )

How to use this scenario with a single GridView table?

Based on the User input, the GridView might have (1 + 3) columns; (1 + 6) columns; (1 + 9) columns; ...etc.

View 1 Replies

DataSource Controls :: Update Query Not Working When Using Query Builder To Configure Table Adapter

Jan 15, 2010

[code]...

This query works perfectly on the query analyser.

But when configuring the Table adapter ,I try executing the query and i get 0 rows affected.

What could I be getting wrong in this case.

NB:Existing GalleryID has been supplied.

View 1 Replies

SQL Server :: Sub Query In Cross Table Query To Create Statistics

Mar 2, 2011

I am trying to create statitics for game downloads and am having dificulty with a sub part of my query. the goup by command is not having the disired result and i think i have been looking at it too long to see what i am doing wrong. [Code]....

At the moment it is producing each result in many rows when only 4 rows should appear. its the download column that is doing it. needs to be sub queried or something to display total in relation to month,gameid,userid.

Month-download-GameID-UserID

1 1
1 1

1 1
1 1

View 2 Replies

Web Forms :: Get Value Of Dynamic Textbox In Dynamic Table With Masterpages

Sep 14, 2010

[Code]....

How can I get those dynamic textbox values from dynamic tables? I am working with a masterpage.

View 4 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved