Dataset Hold Only One Table?
Aug 7, 2010I fill the data set twice, the table name never set correctly.
I see only one table in the DataSet What is chances?
[code]...
I fill the data set twice, the table name never set correctly.
I see only one table in the DataSet What is chances?
[code]...
I've been using this programming style, that I've seen in an example and just started using it, because it does the job... I would like to know other programmers' opinion about it...
So the situation is when you have a GridView, or a control based on it like the RadGrid, and you want to keep track of a data table while you are adding, editing, reordering and deleting rows.
Using the session to hold the data table (or list of data) may not be the best solution, because the user may open two identical web pages... Using the ViewState to hold the data may be and option... I have been using an approach like the following:
[code]....
So using a static List variable, of a custom object (class), declared in the code-behind of the Aspx page, and updating it whenever the data is edited.
I have a table for labels in SQL server, in this table i hold all the text for all the labels i use in my website. The reason i am doing this is because i creating a bilingual site, which will display two languages on one page at the same time. The other language being arabic.
So what this means is that whenever a page loads, it needs to go and fetch the text of the labels from the database to display them on the page.
the way i have done this is that i have created a class called labels, and in this class i have created two methods, one called GetEnglishLabel(ID) and the Other Called GetArabicLabel(ID). Both methods take an ID, which corresponds to the id in the sql server database. Each of these functions is using LinqToSql to get the text for the label for the given ID.
My problem is that for every label i need to call this function, so as you might imagine on one page i might have over a hundred calls to these functions on page_load.
how to copy from one table to another table in dataset using c#
View 2 Replies I need some basic guidance on how I can get my Dataset to insert into a single table instead of sending it to a datagrid.
I get the following columns from DS.Tables["ItemAttributes"]:
Manufacturer
ProductGroup
Title
Item_Id
I get the following columns from DS.Tables["Item"]:
ASIN
DetailPageUrl
Item_Id
Items_Id
Item_Id from DS.Tables["Item"] and DS.Tables["ItemAttributes"] are the same
So I would like to insert the data into a table named amaz with columns as follows
Item_Id
ASIN
Manufacturer
ProductGroup
Title
My DataSet is fetched using the following code, There can be upto 10 rows in the dataset
[code]....
I have a service that runs to error below. It errors at two methods one at timer_elapsed because it in turn is calling another method
GetFolderAndAddWatcher(). I' m tring to debug this and unable to figure out why? Here is my code for these two methods. I know that it is not able to find the data set but cannot figure out how I could fix this
[Code]....
An error occurred in the following application: PSXSTL.Service.MoveProofFiles
In the following module:
The Source was: System.Data
With the Message: Cannot find table 0.
Stack Trace: at System.Data.DataTableCollection.get_Item(Int32 index)
at MoveProofFiles.MoveProofFile.GetFolderAndAddWatcher() in C:$SERVICES2008PSXSTL.Service.MoveProofFilesMoveProofFile.vb:line 240
at MoveProofFiles.MoveProofFile.Timer1_Elapsed(Object sender, ElapsedEventArgs e) in C:$SERVICES2008PSXSTL.Service.MoveProofFilesMoveProofFile.vb:line 177
Target Site: System.Data.DataTable get_Item(Int32)
Additional Info: Error occurred in /Timer1_Elapsed
at System.Data.DataTableCollection.get_Item(Int32 index)
at MoveProofFiles.MoveProofFile.GetFolderAndAddWatcher() in C:$SERVICES2008PSXSTL.Service.MoveProofFilesMoveProofFile.vb:line 240
at MoveProofFiles.MoveProofFile.Timer1_Elapsed(Object sender, ElapsedEventArgs e) in C:$SERVICES2008PSXSTL.Service.MoveProofFilesMoveProofFile.vb:line 177
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
I'm trying to DataBind a DataSet to a GridView in VB but I need to remove certain records from the DataSet that have the ID present in another table.
Here's my DataBind:
[Code]....
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.
I have an asp.net application using visual studio express 2008. On one of my pages I created a dataset from one of my database tables. I am able to delete rows and add rows to the new dataset table. I then have a button and on the click event I use the commandbuilder to update the database table. The database table updates with new rows but the deleted rows are not carried out and I can not figure out why desite spending several hours on google to resolve this issue?
Here is some of my code:
Protected Sub Button_updateDatabase_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button_updateDatabase.Click
Try
'I have created a session variable for my data adapter
Dim commandbuilder As SqlCommandBuilder = New SqlCommandBuilder(Session("Adapter"))
Session("Adapter").UpdateCommand = commandbuilder.GetUpdateCommand
Session("Adapter").DeleteCommand = commandbuilder.GetDeleteCommand
'I created a session variable for my dataset
'This update command updates new rows to my database table but not deleted rows
Session("Adapter").Update(Session("CalendarDataset"), "Name")
Catch ex As Exception
Response.Write(ex.Message)
End Try
End Sub
Real simple one here. I'd like to create a table on my Page from a DataSet. It looks like I have it working properly, but what I'd like to do is interpret the columns, as well as be selective with which column to display.
[Code]....
I would like specific columns, by name or position doesnt matter.So if a column is = named column, then addcell and also, the data needs to be interpreted: If value of column = x then response.write("y")
In sum, I dont want all the columns, just specific ones, then I was to interpret whats in that cell, and write something.
[Code]....
is there anyway to pass in a Table Name to a DataSet?
I'm executing a stored procedure that is returning several recordsets. I have no problems w/ changing the DataTable's name from my Code Behind, but I was wondering if there was anyway the stored procedure could actually pass back the name of each recordset/datatable?
I have a asp table and working dataset.How can I bind the dataset with the table.The code is here....
<asp:table id="tblcampaign" runat="server" width="100%" border="0" cellspacing="0" cellpadding="0">
<asp:TableHeaderRow ID="content_table_heading">
<asp:TableHeaderCell Width="39"><img src="Images/table_heading_bg_lft.gif" alt="" width="39" height="41" /></asp:TableHeaderCell>
<asp:TableCell width="91">Campaign ID</asp:TableCell>
<asp:TableCell width="132">Campaign Name</asp:TableCell>
<asp:TableCell width="134">Parent Campaign</asp:TableCell>
<asp:TableCell width="121">Target Segment</asp:TableCell>
<asp:TableCell width="95">Objective</asp:TableCell>.......
.cs code is here..
MCMS.DAL.Dataset.MobileCampaign mob_cam = new MCMS.DAL.Dataset.MobileCampaign();
MCMS.BL.MobileCampaignHandler obj = new MCMS.BL.MobileCampaignHandler();
mob_cam = obj.GetCampaignDetails();
I need to use caching in my project. The problem is that, When page is firstly load ı cached a dataset. Then after after I update or insert a new record in table. my dataset returns from the cached records.
View 2 Repliesi have an already existing schema (in a xsd file). now i need to prepare a report, so in the rdlc page i take a table. now how can i set the schema as a dataset to the table?(i'm getting an error -- "the table 'table1' is in the report body but the report has no data set. Data regions are not allowed in reports without datasets.").
View 1 Repliesi have a dataset and a table into named Students. Students(StudentName, age)
i wanna name colunm to string array. but not use loops (for foreach..). is there any way?
string[] array = this.dataSetZLC.Student.StudentNameColumn..
I'm returning one table. My understanding is that a DataSet can be made of more than one DataTable. I also understand that I can use either of these to return my one table.
Is it better to use the DataTable when I have one table to return instead of a DataSet? Is there any advantage of not using the DataSet in a situation like this? Is there a disadvantage to using the DataSet when only one table is being returned? Does this even matter?
I am having trouble inserting data into the table using dataset..following is my code:
[Code]....
The m_id is a primary key..I want to auto-increament it everytime a data is inserted into the table so I have configured (isIdentity) to Yes and Identity increament to "YES"..I don't know if its right or not..I already added some data manually into the table but now I want to add more data using the above code..but its not working..
[code]....
I have designed a DataSet which contains two TableAdapters. I want to Bind That dataSet with two table adapters how to do this?
Code:
[Code]....
My Code runs without error but it shows a blank report.
i need to prepare a report as a table. but my table needs to contain data from two schemas. so my doubt is, is it possible to set two dataset names for a table in its property?
View 3 RepliesIm Inserting data into database table with the help of datasets but its not inserting to table and even its not showing errors.
this is my code....
[code]....
My stored Procedure returns two tables say table1 and table2. When I try to fill the dataset, table1 is filling properly and table2 filling only one row of the table remaining rows coming empty. There is no error when I compile the code. And the output is an empty page.
Here the code I've used
SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString);
SqlCommand cmd = new SqlCommand("TABL", cn);
cmd.CommandType = CommandType.StoredProcedure;
SqlDataAdapter dad = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
dad.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
This may not be the correct place to put this as it is both a stored procedure AND Visual Studio 2008 problem.
I have the following stored procedure:
[Code]....
I have been mokeying around with it because of what is happening. I have a dataset, call it dataset1. I drag this stored procedure onto the dataset. I EXPECT a datatable to appear, instead the data set adds this store procedure to the queries table adapter and sets the exec mode to 'NonQuery' which unless I am very mistaken, means "don't expect a dataset back from this' when in fact you DO expect a dataset back from this.
The SQL server is a Windows 2000 Server running SQL 2000. It has never caused us a moments grief since we set it up oh-so-many years ago.
If I connect to a different database and drag a query into the same dataset I get a datatable as I expect. I cannot see where / how this procedure could be wrong. The query when executed returns exactly the data I expect, in the format I expect (looks like a table, acts like a table in the Query analyzer).
I have recently converted all my applications to framework 4.0 and am very happy as a whole.
I have, however, run into a bit of a bind: i have exposed quite a few web services that have methods returning datasets.
Clients immediately started complaining that the order of the tables within the returned datasets were different. I investigated and can confirm that the webmethods are indeed shuffling the tables within the datasets. The order of tables in the method result are markedly different from the table order in the code before being returned.
My question is: is it possible to hard code the order of tables within the dataset being returned by a webmethod? I know that clients should, ideally, be referencing the tables via the table names, but that is - unfortunately - not the case in the really real world.
I've developed an application using strong-typed dataset with .net framework 3.5.is there a way to change the source table for a tableadapter programmatically?
View 1 RepliesI select few columns from table A in dataset. Example "EMP_ID","Name","Address","Phone_Number". I want to save data in this dataset into some other table B.
I want to save data from dataset into table B. But i want to have following functionality
1. Before saving a record from dataset to table B if that record if previously present in table B, if yes then check if any value are different, if yes then update that record with the record from dataset, if all the values are same then leave the records as is.
2. If the record is not present in table B then insert it new records in table B from dataset.
Is there any efficient way to implement in .NET C#.