DataSource Controls :: Different Datatable In A Single Dqatatable?

Jan 15, 2010

How can I filter two different datatable in a single dqatatable? like consider I have following two datatables

DataTable A DataTable B

1 | 1 1 | 1
2 | 2 4 | 8
4 | 16 16 | 32

So after filtering I can have a output like

DataTable C

1 | 1
4 | 32

So in my filtered dattable I can have only matching results of datatable A and Datatable C? How can I do this using .Net datatable?

View 4 Replies

Similar Messages:

DataSource Controls :: Using LINQ To Pull Out A Single Value From A Single Result Row Of A Join Query?

May 25, 2010

For context: First of all, I am new to LINQ, as I have been using SubSonic for quite some time now.

I have two tables, Users, and Affiliates. They both have a very typical schema. The FK that joins them is the UserId field, which is in the Affiliates table. I want to create a LINQ query that pulls the Username from the Users table using the AffiliateId value. The AffiliateId is a primary key of the Affiliates table.

I have tried to accomplish this using many variations of the following code:


In the above query, I expect to get a single row result set. However, I instead receive the entire table of results.

How can I make this work? I have yet to see an example or article out there to do what I am trying to do.

View 9 Replies

DataSource Controls :: How To Copy The Data From One Datatable To Another Datatable Based On The Schema

Jan 11, 2010

i have the dataset with one table.Table contains three column like 'Name','Location','Pin'.I would like to move the data from another table based on schema.

View 2 Replies

Forms Data Controls :: Programmatically Fill The 8 Using A Single Datatable?

Jan 26, 2011

Using C#, Visual Studio 2010

I have 8 drop downlists created in .aspx page.

I try to programmatically fill the 8 using a single datatable. Each dropdownlist has its own column in the datatable and is supposed to display only the column that corresponds to it. It does display the column it is supposed to however it also displays a number of empty slots equal to all the other columns combined.Here is the code can someone tell me why I get the empty slots?


View 3 Replies

DataSource Controls :: How To Get Records In 1st DataTable But Not In 2nd DataTable

May 14, 2010

I have two datatables, I want to get all records which are in one datatable but all matching records which exist in another datatable should not be available.

In terms of set, you can say that record which are in 1st datatable but not in 2nd DataTable.

View 13 Replies

Data Controls :: Export Single DataTable To Multiple Excel Sheets Using OpenXml?

May 7, 2015

I have 25 collumn, i want export 20 collumn to sheet 1 and 5 collumn to sheet 2.

View 1 Replies

Combine Two Datatables Into Single Datatable?

Oct 27, 2010

I am trying to combine two datatables into single datatable... First table contains 3 columns[e.g: 'col1','col2','col3'] Second table contains 2 columns[e.g: 'col4','col5'] Both tables have the same no.of records[rows], but different columns. How to combine them into single table? I need DataTable with columns ['col1','col2','col3','col4','col5']. I am inserting through looping the both the tables and adding values into third table. I tried the Merge (DataTable.Merge()), but it is adding the records to bottom of first one, but i need it should be added to the side[as columns] to first table'

View 6 Replies

ADO.NET :: Replace Single Quotes In A Datatable?

Nov 16, 2010

n my datatable i am retrieving values which contain single quotes. .(eg: paul's, john's, raj's 199:LOQ etc. .) i want to replace these values with ''(double single quotes), so that these records can be inserted in the sqlserver database. . all these values are in single column.

View 3 Replies

Returning Single - Row Queries Using DataAdapter - DataTable And DataRow

Feb 10, 2011

I'm fairly new to ASP.NET and am working through a tutorial that demonstrates the use of DataAdapter, DataTable, and DataRow classes. The tutorial focuses on binding returned DataTables to GridView objects - I'm having trouble understanding what to do to extract one row for display. I've found I can do the following:

ProductsTableAdapter productsAdapter = new ProductsTableAdapter();
Northwind.ProductsTable productsTable = productsAdapter.GetSingleByProductID(searchID)
Northwind.ProductsRow productRow = (Northwind.ProductsRow)productsTable.Rows[0];

A ProductsTable should be able to return its own ProductRows w/o resorting to a cast, no? Can't find how to do it otherwise. I'm thinking how to go about creating a form where the user will only ever be working on one record at a time. Wouldn't it make sense for the DAL to return a ProductsRow instead of a ProductsTable?

View 1 Replies

DataSource Controls :: How To Read A Single Row

Feb 5, 2011

I wanted to know is it possible to pass "SqlDataSource" data to a variable? if not how can i use datareader to do this?

i couldn't figure out how to pass SqlDataSource to a varialbe so i tried use datareader and i'm stuck in middle of it, also my query only returns one row and one column so i rather not to use array if possible. here is my code:


View 3 Replies

DataSource Controls :: Get Sum In Single Query?

Jan 4, 2010

I have 2 tables table1 and table2 as given below.

Table1 - user master table. table2 - transaction table. Now I want to write a single query which will give results like table 3. how to write single query.



View 13 Replies

DataSource Controls :: Sort By Col. In Datatable?

Feb 23, 2010

I have seq no col in the can i order by the seq no so that re-arrage the datatable.or other method have the sort function.and then bind to repeater.

View 3 Replies

DataSource Controls :: How To Merge Two Datatable

Feb 12, 2010

I did a merge on 2 datatable. The result is as per After Merged below, but I expected to the result to be the Expected result.

Before merge


After Merge


Expected result


View 1 Replies

DataSource Controls :: ObjectDataSource With Datatable?

Apr 14, 2010

Could I receive datatable or datarow as objectDataSource update function parameter? I need it because I need the datarow verison functionality to detect change for a column in the update function logic.this is what i had tried:


After I setup the update function in the ObjectDataSource , its DataObjectTypeName has a funny name


View 3 Replies

DataSource Controls :: How To Know If A Single Row Query Fails

Jan 15, 2010

I am using a 'SingleOrDefault' LINQ query with a Lambda expression such as:

Email email = db.Emails.SingleOrDefault(p => p.Email1 == Textbox1.Text);

If the textbox entry does not match anything stored in the table, how would I know and how could I deal with this situation in the code?

View 12 Replies

DataSource Controls :: How To Return A Single Row Where There Is A One To Many Relationship

Jun 23, 2010

I have 2 tables. Table_A has one to many relationship with Table_B.

For example. Table_A has an ApplicantKey and in Table_B I am storing (Resume_name and CoverLetter_name for the Applicant). Joined by ApplicantKey

Now when I join them and execute the query obviously it returns me two rows. But what I want is that it should return only one row with Columns like Resume_name, CoverLetter_Name

View 2 Replies

DataSource Controls :: How To Lock Single Row For Update

Jul 2, 2010

i develop a c# windows application. My database is sql server 2008 exp. i want lock single row for user select it for update. for example;

userA - Connection a (connection id 52);

user select a single row (select * from t1 with(rowlock?, updlock?,or what) where id=1) and bind data to form fields (texbox, checkbox,combobox etc.). (there is no problem)

userB - Connection b (connection id 54);

userB can select all other rows from t1 (where id=2 or 3 or anything) but not id=1. when userB select * from t1 where id=1 system generate an exception with (you cannot select this row because it is updated. Updated users connection id is 52.)

when userA (connectionid52) close form or commit changes then userB can select id=1.

i am read few documents (transacions, rowlock,updlock, concurrency violation optimistic,pessimistic) but i couldn't understand.

View 1 Replies

DataSource Controls :: How To Get Single Record From SqlDataSource

May 25, 2010

I need to get one record from rows. For example:


id, name, age, nick, gender , etc...

1, John, 18, gobb, M, ....
2, Andrew, 22 , AND, M, .....
3, Simon, 35, Lucky, M, ......

How to Get name (For example Simon) from DB and enter it into label? Or perhaps this is impossible?

View 2 Replies

DataSource Controls :: Getting A Single Value From A Returned Dataset?

Feb 18, 2010

I've managed to connect to the database and return a record based upon a login name. I can itterate through the rows printing out the password but I know there's only 1 row (or can test for that) so how do I get the value of the password for the one row without the loop?

Dim supervisorAdapter As New SupervisorTableAdapters.SupervisorTableAdapter
Dim supervisors As Supervisor.SupervisorDataTable
supervisors = supervisorAdapter.GetSupervisorByLogin(login)
For Each count As Supervisor.SupervisorRow In supervisors

View 3 Replies

DataSource Controls :: Selecting A Single Value From A Field?

May 18, 2010

I have a table in which a field consists of a multiple values like CSE, INF, ECE etc., I want to take only one value from the field like

When an user selects a particular branch like CSE, the user should get the list of Colleges assosiated with the branch CSE. How to do this?

View 3 Replies

DataSource Controls :: Single Owner On Both .mdf And Log File?

May 2, 2010

I'm working on my private website(using VS2008) which is connected to a simple database(using SQL management studio 2008). The database is currently located in the App_Data folder and the connectionstring should be quite simple;


After reading several forum threads I have changed the following;- Permission (locating the db and going into security, removing current users and adding me (local) to it as single owner on both .mdf and log file.

View 2 Replies

DataSource Controls :: Trying To Sort A DataTable, And Not Always Succeeding?

Apr 27, 2010

I am trying to sort a DataTable. If I declare a DataView and use the following approach it works perfectly:

Dim dt As DataTable = getData()
Dim dv2 As New DataView(dt)
dv2.Sort = "surname, name"
dt = dv2.ToTable

I wanted to do this without using a DataView though if possible to reduce the impact on resources. I tried the following approach but it doesn't work. I might be writing the code wrong so

Dim dt As DataTable = getData()
dt.DefaultView.Sort = "surname, name"

View 3 Replies

DataSource Controls :: Datatable Sort In A Particular Order?

Oct 22, 2010

How do I sort a data table based on a particular column which has integer values in ascending order?

I wrote this:

leadtable.DefaultView.Sort = "Id"

But it doesnt seem to work, it displays fine but when i get try to get the values of the sorted datatable in an array they dont come in an sorted ordere Datatble is defined as:view plaincopy to clipboardprint?

View 3 Replies

DataSource Controls :: How To Access DataTable Previous Row

Mar 11, 2011

How do I refer to row index. I need to compare the data in the row before the active row in a foreach loop.

foreach (DataRow row in dtGCats.Rows)
tempCG_ID = Convert.ToInt16(row["CG_ID"]);
prevCG_ID = Convert.ToInt16( need row -1, row before above current row)

View 1 Replies

DataSource Controls :: Sorting Column In DataTable

Jul 26, 2010

I have a DataSet comprised of two DataTables. One of the DataTables is further comprised of the results of two different SQL calls. I need to alphabetize the results of those SQL calls. After the seconds set of results is added to the DataTable I tried the following but the end result (displayed on the page) did not alphabetize the returned results. There was no error. Can anyone advise me please. 'programs' is the DataTable name, title is the column name.

programs.DefaultView.Sort = "Title ASC";

View 3 Replies

Copyrights 2005-15, All rights reserved