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?
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How to add new column to existing datatable which is inside dataset using C# .Net ....
View 1 RepliesI have a DataTable which having some rows which bind from database. I would like to add some new rows to that datatable.
I used the following code.
conn.Open();
SqlCommand cmdDownload = conn.CreateCommand();
cmdDownload.CommandType = CommandType.Text;
cmdDownload.CommandText = "select SKUCode,'Image Available' as [Status] "
+ "from tblName"
[Code]...
But the new rows are not adding to the datatable.
Below is a beginning attempt to increment through a DataTable populated by a Stored Procedure and create a new DataTable where every Category is represented by exactly four products. I need to add dummy product entries for some and skip over those with over four products.
A) - I think I understand the basics but this builing from scratch is not my practice.
1) I do not know how to query a previous row in reference DataTable.
2) I do not know how to jump to next row from IF construct.
3) I hope I am able to build a DataTable row by row.
4) Partial sample data is at bottom of pseudo code
[Code]....
'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'
View 3 Repliesfor below i dont want to use sql Query bcz data is not coming from sql/oracle database.
its comeing from propertary database and data is in datatable .
This is datat table format :
[code]....
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 Repliesim 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
What I have is a datatable being constructed from Sharepoint API. We dont need to worry about the sharepoint api.The code where it fills the data is as follows
Datatable dt = new datatable();
Sharepoint.fill(dt);
Write what I want is as the dt is being filled is to create another column called full path which has a formula col1+col2I dont want to do a for next loop after the dt is filled . very slow !
I want to transfer data from datatable to a gridview with a hyperlink column. But dont know how to do.
I attach my code as below, what i want to do is to output 2 columns in gridview, and the first column should be a hyperlink. However, now the first column still shows nothing.
Web page code:
[Code]....
C# code:
[Code]....
How to fetch data in gridview and add newly added item column in same column? As I know fetch data in gridview, my prob is add new data in new column in gridview.
View 1 RepliesBelow is the code behind for a simple aspx page. The web form contains one GridView (GridView1) and one label (Label1). I create a Data Table, then add a row to the table. I then DataBind my GridView to the DataTable. (so far so good) When I run the page I do see the GridView and the single row of data. However the checkbox shown is not enabled, meaning the user cannot uncheck or check it. (As if was not enabled)
Imports System.Data.SqlClient
Imports System.Data
PartialClass test
Inherits System.Web.UI.Page
ProtectedSub Page_Load(ByVal senderAsObject,ByVal eAs System.EventArgs)HandlesMe.Load
CreateDT()
EndSub
PrivateSub CreateDT()
Dim dtAsNew DataTable
Dim col1AsNew DataColumn
[code]...
i build some shopping cart. I have Datalist that display products from SQL table (id, productName, productPrice) and "Add" button. After the user click the button the product appear in the GridView (im using Session DataTable) until now all fine and work greate! in every product i need to add 2 checkboxlist from SQL tables (its some extra to the product). How can i get the items the user was checked and put them with the product name in the same datatable coloumn? the aspx code:
[Code]....
this is the code behaind:
[Code]....
I have following issue: I have a datatable with a column which I would like to encrypt. This table has about 10.000 rows, and this particular column is storing 14 digit keys. Is there any way to encrypt all those keys in this particular column (just to make them useless if someone steals by db)?
View 6 RepliesHow to get Column Data Type in Autogenerated Grid View ?
View 1 RepliesI have on datatable in it there are columns like TimeStamp,value....Timestamp formate is mm/dd/yyyy
i want to convert all Timestamp value in dd/MM/yyyy format...i cant do it on database site not using orcale,sql.
Is it possible without loop?
I have a dataset that has around 5 rows. I also have another Datarow() array that has an additional 3 rows which I would want to add to the dataset. The structure of both the Dataset Rows and the Datarow arrays are the same.
Do I have to perform a loop on the datatrow arrays and add them one by one? or is there a better way of adding them in one go ?
I have a datatable that looks as follows:
Make,Ford,0
Model,Fusion,0
Year,2010,0
Make,Ford,1
Model,Focus,1
Year,2010,1
I'd like to loop through each row and replace all the values of the same type in the 3rd column with a different value.
So for example I would change all the 0 to 1234 and all the 1 to 1235. So I'd end up with:
Make,Ford,1234
Model,Fusion,1234
Year,2010,1234
Make,Ford,1235
Model,Focus,1235
Year,2010,1235
Whats the best way to do that ?
How to create Rows and Column using Datatable Gridview Itemtemplate with multi header I need to create Datatable Gridview Itemtemplate fixed rows and column such as 7 rows and 7 columns
[Code]....
I have one problem with my shopping cart that I really can't figure out all by myself.I want, if a item already exist in the datatable, the quantity to be updated for that item with the new number instead of creating the same item again.I have done a foreach loop because I think that is where I should start.Notes: MyRow[3] is the column holding the quantity.Code:
[Code]....
//Bengt
I am using the C# code you posted in the link below,
[URL]
but when I run it I am getting the error:
"A column named 'link' already belongs to this DataTable: cannot set a nested table name to the same name."
I need to add rows to an existing (maybe) datatable in a dataset that combines the IIS6 index search with my own sql table. I keep getting object reference errors.
[Code]....
i have a datatable with several columns and rows. now i want to copy the last column fully (all rows) and create the new column with that values.
it means last column values sholud be moved to new column (now this is the last column).
how can i convert the column data in datatable to integer array the column data in datatable stored as:
1
2
3
4
after store to integer array,how can i get the max value in array
how to copy data from datatable to table in dataset i ry this but its readonly property
ds.datatable1=newdt.copy
