Web Forms :: Append Records From One DataTable To Another
Apr 2, 2012How to append a records from one data table to another data table.
In both the data table, I am having a similar columns.
How to append a records from one data table to another data table.
In both the data table, I am having a similar columns.
i have 500 records to show in webpage. i am using DataList in that webpage. if i use direct binding it is slowing down the performance of the page and is taking time to load. now i have used update panel and i want to append data records by records(i want to append as first 50records and then next 50 records something like)
View 4 RepliesActually I am wishing to use StringBuilder to Append DataTable as given below:
[Code]....
correct the line sb.Append(dt.Rows[i].Item(k, DataRowVersion.Current).toString()); to eliminate the following error:
'System.Data.DataRow' does not contain a definition for 'Item' and no extension method 'Item' accepting a first argument of the type 'System.Data.DataRow' could be found (are you missing a using directive of an assembly reference?).
I am fairly new to Vb.net. I have succesfully populated Dataset from a Text file using Schema.ini.
However I acually want to append these records into a Table and cannot figure it out.
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
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.
I have an Access 2010 DB that I have a table of RAW data in. In my scenero when table 'a' has been populated all the rows with the updatedate of Now() get moved to another table... the SQL is like this...
[Code]....
As you can see it is a very simple query but it does NOT return any rows. There are actually 404 rows with todays date in teh Append_Date column.
I am stumped as to why it does not return rows?
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.
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 RepliesI 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?
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....
I have One DataTable Having 500 Records, want to Fetch Top 10 Record. how to do it
View 2 Repliesi 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.
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.
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 ...
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'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'
View 3 RepliesIf 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 RepliesCan you append items to a listbox?
View 13 Replies[Code]....How to append a redirect onto a URL that has parameters?
View 3 Replies[Code]....
this is my html code
[Code]....
this is my code behind
[Code]....
this is my bal code
acuttally
in my javascript popup i am getting the checked values but i need it in record by record in the lblsave data
i have a question regarding grid view. i have done almost all work i needed. but one thing i want to do is i have set 4 of page size of grid. so when i show records on the web page i want to set a iframe after first two records then iframe and then two more records like i have shown in the example image. i have used LINQ with C#.how to do it. if you people want i can show you my code.
View 3 RepliesI have a listview that is bound to a datatable on the runtime. The listview has a <ItemTemplate> format which includes a lot of controls. On the page Load I do bind the listview to a datatable. Now, I want to add more ListView Items without databinding the whole listview and maintain the same ItemTamplate.
View 14 RepliesOn my products page I have a small thumbnail and a description that is pulled from the database, since there is space restraints, how do I allow a max amount of characters, and if the description is longer append ... to the end? I'm using a data repeater and data binding for the content inside it.
View 2 Repliesi am having a issue i.e i am saving my files in a folder. Now i am having 2 files such as one.txt and two.txt now i would like add the content that was in the two.text to one.text .
My sample code is like this
string file = Directory.GetCurrentDirectory();
file = Directory.GetParent(file).ToString();
file = Directory.GetParent(file).ToString();
file = file + "\ACH";
objPPD.savePPD(file);
at this point i would like to get that 2nd text file and would like to append but i am getting an error as unauthorized exceptoin