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


Similar Messages:

Data Controls :: Copying Specific Records From One Datatable To Another Datatable

Aug 22, 2012

im trying to copying specific record from one datatable to another datatable i used below code

public System.Data.DataTable selectspecificdatarow(System.Data.DataTable dtg, int count, int startindex)
{
System.Data.DataTable dtn = dtg.Clone();
for (int i =startindex; i < count; i++)

[Code]....

its taking too long time in cloneing is there any better way to do this task which is Time effecent

View 1 Replies

DataSource Controls :: Fetch Top 10 Records From DataTable?

Jun 29, 2010

I have One DataTable Having 500 Records, want to Fetch Top 10 Record. how to do it

View 2 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 :: How To Edit Records In GridView With Datasource Datatable

Jul 24, 2010

I am new to asp.net.I am buliding an online shopping application.Could anyone tell me the steps to edit records in gridview which have its datasource i.e. datatable.Means the shopping cart wil display its products.i want to do editing in gridview say quantity or product which automatically edit records(quantity) in datatable and then gridview wil again get bind to new edited datatable and able to show edited records say edited quantity of taht product.

View 4 Replies

DataSource Controls :: Does Dataset Store All Its Datatables' Records Into Memory If I Just Call One Datatable From It

Apr 2, 2010

Does dataset store all its datatables' records into server memory if I just call one datatable from it?Lets make an example, a dataset with three datatables - tbCompany, tbCompanyStaffs, tbSalesOrderwhere tbCompany is the parent of tbCompanyStaffs. tbSalesOrder is an independant table.Does dataset load all tbCompanyStaffs records into the server memory as well when a class retrive data from tbCompany?

View 3 Replies

Error "DataTable Is An Ambiguous Reference Between System.Data.DataTable And Microsoft.Office.Interop.Word.DataTable"

Jan 20, 2011

'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'

View 3 Replies

Forms Data Controls :: Set A Column In A DataTable To Be A Primary Key For An Existing Datatable

Apr 2, 2010

If I am passed a datatable and I cant change the column structure..is there anyway to set an existing column to a Primary key so I can easily Find() the row I am looking for?

View 1 Replies

Data Controls :: Fetch Top N Records From DataTable Or DataSet In Net Framework 2.0

May 7, 2015

Aspx code:

MembershipUser m_user = Membership.GetUser();
DataTable dt = new DataTable();
dt.Columns.Add("SenderUser");
dt.Columns.Add("RcvUser");
dt.Columns.Add("Message");
foreach (ListItem li in lst_Users.Items) {

[Code] ....

I am calling "Application object" from above aspx page into web service page as below:

[WebMethod(EnableSession = true)]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public string WebMessage() {
List<string> list = new List<string>();
DataTable dt = ((DataTable)HttpContext.Current.Application["Message"]);

[Code] ....

I want to know that the approach im using in Web service page to fetch top 5 messages from Datatable is correct or not? How to do that without using LINQ as I am using framework 2.0 ...

View 1 Replies

C# - How To Get Distinct Records In Datatable

Jul 20, 2010

I am using C# + VSTS 2008 + .Net + ASP.Net + IIS 7.0 + ADO.Net + SQL Server 2008. I have a ADO.Net datatable object, and I want to filter out duplicate/similar records (in my specific rule to judge whether records are duplicate/similar -- if record/row has the same value for a string column, I will treat them as duplicate/similar records), and only keep one of such duplicate/similar records.

The output needs to be a datatable, may output the same datatable object if filter operation could be operated on the same datatable object.

What is the most efficient solution?

View 3 Replies

Pass Datatable To The Mvc View Error / CS0246: The Type Or Namespace Name 'DataTable' Could Not Be Found

Sep 28, 2010

I was reading: [URL]

But I have give a compilation error:

CS0246: The type or namespace name 'DataTable' could not be found (are you missing a using directive or an assembly reference?

View 1 Replies

C# - Populate DataTable With Records From Database?

Oct 8, 2010

This is my GET Method to get my data from my DataTable

Private Function GetData() As PagedDataSource
' Declarations
Dim dt As New DataTable
Dim dr As DataRow
Dim pg As New PagedDataSource

' Add some columns
dt.Columns.Add("Column1")
dt.Columns.Add("Column2")

' Add some test data
For i As Integer = 0 To 10
dr = dt.NewRow
dr("Column1") = i
dr("Column2") = "Some Text " & (i * 5)
dt.Rows.Add(dr)
Next

' Add a DataView from the DataTable to the PagedDataSource
pg.DataSource = dt.DefaultView

' Return the DataTable
Return pg
End Function

It returns the DataTable as "pg"

What changes must I make to this GET method to get the records from a table in my database?

C# examples will also do but would be great to see a reply with my code and then the changes....

View 1 Replies

Web Forms :: Append Records From One DataTable To Another

Apr 2, 2012

How to append a records from one data table to another data table.

In both the data table, I am having a similar columns.

View 1 Replies

Add Records From DataTable To ArrayList Using AddRange Method?

Mar 25, 2011

i have a dataTable, which contains a column which has 100 rows, now i want to add those rows in ArrayList, but not with the Add Method, because i have to use for loop for adding records one by one, so i want to prefer addrange method of arraylist, so it is possible to add records in arraylist from DataTable using AddRange.

Below is the code which i am using.

Dim adapGetImages As New SqlDataAdapter("select distinct FileName from Files where Filename<>'' and (RIGHT(FileName,3) = 'gif' or RIGHT(FileName,3) = 'jpg' or RIGHT(FileName,3) = 'bmp') order by FileName", connection)
Dim dtGetImages As New DataTable()
adapGetImages.Fill(dtGetImages)
ArrayList1.AddRange(dtGetImages.Rows[0][0].ToString())

The last line is where i am stuck. as if i run this it will just add single row, and if i say dtGetImages.Rows.ToString() then this will just Add System.DataRow in Arraylist and not its content.

View 2 Replies

C# - How To Join Two Datatable Datas Into One Datatable To Show In One Gridview

May 24, 2010

how to join two datatable datas into one datatable to show in one gridview

i.e in 1 datatable i have username and pwd and in another datatable i have that user details. how to show all these in one datatable to get those values display in gridview(asp.net)

View 4 Replies

DataSource Controls :: Sort By Col. In Datatable?

Feb 23, 2010

I have seq no col in the datatable.how 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

[Code]....

After Merge

[Code]....

Expected result

[Code]....

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:

[Code]....

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

[Code]....

View 3 Replies

C# - SQL Server - Refreshing Cached DataTable With Only Records That Have Changed

Jan 20, 2010

I have a large DataTable cached in my web app that is the result of a complex query that returns a large data set. Whilst this data table is cached the query that runs to "refresh" this cache still takes a long time, largely due to the sheer amount of data being returned. In order to speed this up I am considering implementing a timestamp type approach to my tables in order to limit my query to only return rows which have changed.

I then intend to merge this smaller dataset with my cached datatable. Has anyone done anything similar to this, or is there anything out there that handles this already? I feel this could be a re-inventing the wheel situation if I dive straight in.

View 1 Replies

Web Forms :: Query DataTable To Get Records Between Start And End Dates

Apr 5, 2012

I have to filter the records from the data table based on the date.

I am having a column in data table called "cStartDate".

I will enter the begin and end date. I have to find out whethere the "cStartDate" is within the begin and end date i entered.

I am going to implement the filter logic in data table with out affecting the data base.

I need a Filter string for this.

View 1 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

DataSource Controls :: Datatable Sorting Not Working

Apr 13, 2010

Dim dt as datatable = test.select()
dt.DefaultView.Sort = "col1 ASC"
for each dr in dt.rows
response.write(dr.item("col1"))
next

I had found out the sorting command is "dt.DefaultView.Sort", but why is it not working. Can someone shed a light.

View 3 Replies







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