It must just not be my week to learn LINQ. I have a Typed DataSet that I am trying to write a LINQ query over and take advantage of the strong typing. The problem is that in visual studio, I can't use intellisense to take advantage of the strong typing. I don't know if it matters, but I am doing this in a class file project, not in a website type project. Anyone run into this or think of something I should check???
View 2 RepliesTill now I used to design RDLC file before and assigned typed dataset table columns.Report processing mode is local. But now my stored procedure returns different columns based on condition i.e columns are not fixed every time. Now I need to add that columns to typed dataset and dataset is assigned to RDLC file. So dataset and RDLC files are create dynamically based on stored procedure result set columns.
View 1 RepliesToday I am facing the problem with Typed DataSet using DataSet.XSd file, And How to fetch, Delete and Update the Database through Dataset.xsd file.
View 9 RepliesHow to refresh the xsd Typed DataSet when I change an id field from normal to autoincrement? I'd the INSERT statement to remove the 'id' field in its statement from files *.Designer.cs and *.xsd.
View 2 Replieshow can i add multiple columns in typed dataset.
I have a typed dataset (ProjectDemandDAL.xsd) with two methods in it. Now i just wnt to add few more columns of diff table. How can i add it.
How can i add designer.cs to this file?
I have a Strongly typed Dataset TableAdapter in C#, how do I get a single row from it?
View 4 Repliesis it possible to do a batch update in a strongly typed data set? UpdateBatchSize does not seem to be an option once you create a strongly typed dataset.
View 1 RepliesI'm currently working on a 3-tier ASP.NET application (UI, BLL & DAL). The DAL uses a strongly typed dataset that I've created with the VS Dataset Wizard. My question is, what is the best way to handle exceptions originating from the BLL and DAL classes. I googled a bit and it seems that the most commonly used practice is to create DALException and BLLException classes and throw your own message. Is this the way forward? how this can be done for an automatically generated DAL? What are the best practices?
View 1 RepliesI have an asp.net nTier application. The data access layer is a strongly typed DataSet consisting of multiple DataTables with DataAdapters. When the user logs in, they choose which database to connect to (from a table in the membership database). I need to pass the selected connection string into the DataSet object which will remain the same for that users until they log in again. I'm thinking that the answer might be to create a partial class of the DataSet object where I can pass the connection string into the constructor. Im not sure how to go about this though.
View 2 Repliesi create typed dataset and i create my report using this dataset in another page i create report viewer when i set the report source for the report viewer using wizard automatically the reportviewer generate 3 ReportDataSource one for each table it is working correctly but when i try to set the report using code the report dislplayed successfully but it is empty? here is my code to bind to dataset
[code]....
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 have a winform application with huge strongly-typed dataSet. Now, i've decided to create a web edition of my application and i want to use strongly-typed typed dataSet which exists in my winform application. also it's tableAdapters create with the connection string settings which stored in my winforms app.config. My problem is that how to use strongly-typed dataset of my winform app with new connection string which exists in my web app?
View 2 RepliesI'm trying to set up a simple content management system for two different sites, which are both stored on the same server (my own, not hosting, if it matters:)).
Both sites are basically the same, built upon a similar (but seperate) xsd (Typed DataSet) file, and read data from different databases using the tableadapters in the xsds.
Obviously, i have the same xsd setup in my management system application that need to hook up to the relevant database (after user authentication) and use the tableadapters to access the data and allow the forms in the management system to modify the data.
When i had a single site, the connection string was stored in the web.config file and after logging in to the management system, all forms could access the database.
Now i have two site and i need to setup the connection string in the xsd dynamically after user validation based on the relevant site to edit.
My question is, how do i set the xsd's connection string dynamically (after user logs in, the function returns the specific connectionstring and stores it in a Session variable)
i have been developing an asp.net application with typed dataset.suddenly after adding a method to one of my tabel adapters and compiling the project this error occurs in compiling dataset: Failed to generate code.object reference not set to an instance of an object.
View 4 RepliesI have a date field in a typed dataset that created from database.
I get an NULL Value exception when I try to enter some null value. I am not able to set the Nullvalue property of the DateTime field in XSD to other value other than Throw Exception.
I am getting Resultset from SQL server2005.It contains 4 tables.
Dataset ds=new Dataset();
ds=BLogiclayer1.TestMethod1(a,b,c,d);. This normal Dataset ds contains Resultset. ( I am working with RDLC reports. I added a Typed dataset to my project. I am using Typed Dataset as report dataset.) I want to add normal Dataset all the table values to Typed Dataset table as rows i. e. only one table in Typed dataset.I am trying like below.
//Typed Dataset name that I have added is salesdata.
salesdata sd=new salesdata();
for(int i=0;i<ds.Tables.Count ; i++)[code]....
I fill a GridView from a ObjectDataSource that points to a Typed DataSet.
I need to read a couple of row columns from the object data source that IS NOT part of the Gridview.
So far, I have found out that ObjectDataSource.ObjectDataSource_Selected is the right event to do this.
Examples on the internet refers to e.OutputParameters, but that appears to be empy even though rows are returned.
e.ReturnValue seem to contain a type related to the row type, but I cannot interpret this either.
how can i get a single row from strongly typed dataset table data adapter in c#?
View 2 RepliesI have a typed dataset that I'm using in my report, it's listed as a "database field" in Field Explorer. when I run my crystal report there is a popup window that asks me for a "database login".
I'm already binding my report to a database and getting my values from there. the login details are in the project.
The "database login" window has the following values:
Server Name: NameOfMyTypedDataset
Database: <nothing> field disable and greyed out
Login ID: <nothing>
Password: <nothing>
How can I prevent this window from appearing?
I'm new to this community and got newbie question, briefly in data access in asp.net what is the difference between accessing dataset using typed Dataset and using data sources controls like SQL data source control ...? As I noticed that using data source controls is much easier, but it allows only one data access method i.e. only one query... am I right with that....
View 1 RepliesI have an XML string which contains Dates formatted "dd/MM/yyyy hh:mm:ss".
I'm loading this XML into a dataset using DataSet.ReadXml().
How can I ensure that this Date is stored in the DataSet as a typed DateTime so that I can Sort, Format and RowFilter on it accordingly.
My test harness is as below:
ASPX Page:
[code]....
So my question is more in relation to what people consider to be the best practice and why:
I've been dropping literals into pages and repeaters and binding them in code behind for a while. Is this considered bad practice?
ie:
ASPX Page:
<asp: Literal id="litTextToInsert" runat="Server" />
Code Behind:
litTextToInsert.Text = objData.MyText;
OR (repeater):
[code]....
I personally dont like doing this as i find it makes it harder for me to know if someone changed the field name, or mis typed it during development - the other way you won't know until the page loads.
With the strongly typed version if something changes in your DAL etc the build will break - letting me know I've messed up.
Why do so many people appear to use weakly typed code in ASP.Net (in examples, MVC, etc)?
Am i missing something?
Given the benefits of using strongly typed views to eliminate typed errors and the use of lambda expressions why would one use a dynamically typed view? When I use them I don't feel as safe as with strongly typed views. Am I missing something? Is there a special use for them?
View 2 RepliesIn my project I work with Entity Framework (LINQ to ENTITY). I only have ADO.NET Entity Data Model and a DAL (Data Access Layer). I also get the data due a WCFClientService. I have a gridview that needed to be exported in Excel.
FlexCel is a tool for generating Excel files based on a template. The only thing I see in demo's is that they work with DataSets.
Is there a way to convert the data in my gridview to a virtual DataSet?
I've written the following method to get the data:
[Code]....
What I am thinking is this? Is it possible for me to upload the data from an excel file to dataset of my application first, so that the user can view the data in a gridview to review it first, before the user strike the save button, to save it in the database. So, that in case there is a problem, the gridview will high light all the data with an error. So the user can easily pull out the excel and correct the data before saving it in the database.
View 4 Replies