DataSource Controls :: DAL Dataset Showing All The Column?
Aug 20, 2010
I follow the tutorial and create DAL with Dataset. I created a Table Adapter with many column, but when i Call a simple Get for 2 column only. The system display 2 column and the rest column with empty data.
example: Table with 40 column define in Dataset in DAL. I have GetMember from Dataset with 40 column, some request only 1 column (with 39 empty), some request 22 column (with 18 empty column). Will this affact the performance?
I have a dataset with several tableAdapters in it. For some reason, one of them that I created doesn't show up when I try to put it into my objDataSource?
I can access and use it from codebehind (testing purposes for this post.
I have a stored procedure in my database that sorts a dataset by distance from the specific address input by the user. The distance is created among each individual users query and the sorting of distance occurs within my stored procedure, the distance is not returned in the output. Is there a way I can create a temporary column that returns the distance so that I can give the user an option to sort by distance?
how do i copy required row in dataset to a new dataset. i have bind a xml into a dataset and i need to display say row 3 to 5 only so i do a for loop but i have encounter problem when trying to copy the rows to a new dataset.
do i have to write the xml to datatable and bind it to dataset and from there copy over ?
i am creating a dataset from SP Sp when executed in query analyser dislays the output but when i used the same for creating datset , its created but i dont get any columns i checked the xsd in notepad but there is no column source names
I have a datatable in MS SQL that has FirstName and LastName. In MS SQL I created a computed field called FullName that was ((rtrim([LastName])+', ')+rtrim([FirstName])) I created a DataSet and a Business Logic Layer. In my typed DataSet I saw FullName in the listing when I created it. I am able to use FullName in my webpage. I use it to populate a dropdownlist. However, now when I make changes to the Customer Table I am getting this error message (seen below)
Question: Should I have created the field FullName in my MS SQL Table or should I have left it alone and somehow just added a column to the DataSet and placed an expression in the FullName column? The column "FullName" cannot be modified because it is either a computed column or is the result of a UNION operator. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: The column "FullName" cannot be modified because it is either a computed column or is the result of a UNION operator. Source Error:
[Code]....
Source File: c:Users ottfarmsAppDataLocalTempTemporary ASP.NET Filesinternalauburnriverside98ea0e1f2a7f0720App_Code.lbdcba1v.2.cs Line: 1240 Stack Trace:
The following query returns me the column name from the table in the database, and stores the column name in the grid. How can I change the column name in the grid using following code, if its possible?
DataSet p_dsInformixDataDs = new DataSet(); string cmd = "SELECT * FROM CUSTOMERS"; try { using (IfxDataAdapter da = new IfxDataAdapter(cmd, m_InformixDBConn)) { da.Fill(p_dsInformixDataDs); } } DataView myDataView = new DataView(m_dsInformixDataDs.Tables[0]); if (myDataView .Count > 0) { GridView1.DataSource = m_dsInformixDataDs; GridView1.DataBind(); }
I have a gridview, which has bound field as "Birth Date", which is coming from the database. I want to show another field in the gridview as "Age", which should calculate age, Which should be Birth date - system date.
[Code]....
How to Calculate the age display the age in gridview columns.
I'm currectly tryin to access a specific value in my database in a specific column. I'm tryin to use the primary key of the table to access the actual value in the row of that ID.
The current code:
[Code]....
Just iterates through the table and looking for any row with the boolean 'checkin' value is True, then it takes the 'id' value of that row and stores it into an array. Is there a way that I can access a another entry, and only that entry, in the table with the 'id' stored in the array?
Like if my data base contained and int, primarykey, `id` value, a boolean, `checkedin` value, and a `time` value, is there a way to access, lets say, the row with `id` equalling 3 and and the checkIn value from that row?
I am having one column in each row of my radgrid in which i want to show an image. I am getting values from database saying 1,2 for that particular column and for each of these values i want to show different images for different values. For Example if i am getting 1 from database i want to show "roseImage" and for 2 i want to show "lotusimage",
I have been reading this forum post: http://forums.asp.net/t/1320074.aspx.I have found that I have to have the column which contains the image path showing in the gridview, in order to reference it using e.values("columnhere"). Is there a way I can do this without the column showing? I have tried setting the visible property to'false' but it still doesn't like it.
I have a crystalreportviewer bound to a dinamically generated DataSet. The Datatable within that dataset has 2 rows of data, however only the first one is showing on my report.
Here's the code that binds my dataset to the report viewer:
I want to dynamically bind dataset values into datagrid's header datafield.
Is it possible? To be more clear, when you click on datagrid's (Collection) from properties window, you get selected columns created from Bound column. So in those columns I want to dynamically display dataset's table values in those columns.
i.e like ds.Tables[0].Rows[0][0].
Is it possible to do it in Datagrid ItemDataBound function like,
e.Item.Cells[1].Text = ds.Tables[0].Rows[0][0]
or something like this? I know the above code is wrong and wont work since I tried it out and while building it throwed error saying, Cannot implicitly convert type 'object' to 'string'.
In myapp, I can create two datasets: [dstServer1] and [dstServer2]. They are coming from two tables which are in two different SQL server: [Order1] (in server1) and [Order2] (in server2). These two tables have the same data structure. How to code to compare two dataset and then insert difference into another table without using linked server?
I have a problem, I need to get a date from an SQL database using a dataset.xsd.
To do that, I have created a query in the TableAdapter called GetDataByFecha:
SELECT fecha FROM T_Tickets WHERE(fecha = @fecha)
in C# I do this:
DateTime T_fecha;
T_fecha = Convert.ToDateTime(ticketsAdapter.GetDataByFecha(fechaTicket)); but, when I compile it I get this error: cannot convert a 'T_TicketsDataTable' object to 'System.IConvertible' type.
I have dataset which is called at page load event. Also every time i clicked on refresh it will call refresh function where it store updated values from database.
Now I want only updated fields row and want to store into datatable or another dataset.
I dont want to cmp each and every iteration of the dataset. I used Getchanges() of dataset but not working.
