Let's say I have a dataset in an ASP.NET website (.NET 3.5) with 5 tables, each has roughly 30,000 rows and an average of 12 columns. I want to insert all of the data from the dataset into 5 very-similar-but-not-quite-identical tables in SQL Server 2008. I also want to use LINQ (personal preference - trying to learn something new).
Is it as simple as iterating through the dataset and, for each row, creating a new instance of the associated class, initializing its data with the dataset's row, adding it to the data model, and then doing one giant SubmitChanges at the end?
Are there better ways of doing this with LINQ? Or is this the de-facto standard?
I have function like Public Dataset getdata() { dataset = db.prcGetdata("name"); return dataset; } db is linq. prcGetdata is a proc which accepts name param and returns 1 or more rows. So, my requirement is how to get data to dataset using linq.
Like that I have large number of controls on my form. I have dought, if I assigned like this, db.usp_ATI_FetchPatientDetails(iPatientID).ElementAt(0).Last_Name.ToString(); to every control, then I have set of controls like,
My question is that, for each control the Stored Procedure called or not? If it is yes then it is time consuming and I need to use LINQ to DataSet or LINQ to Object rather than to call SP for each control. What is difference between LINQ to DataSet and LINQ to Object?
I am trying to insert a UserID column into a database table during membership creation. I have my tables set up in a dataset with the stored procedure in there. Now I am trying to call that stored procedure in the newuserwizard code and I it is not recognizing the stored procedure. I know it is because my dataset is not referenced in the newuserwizard code. Here is the code I am using:
[Code]....
The name of the stored procedure is "InsertUserID". I think I need to create a function that references the ataset but I am not sure how to do this..
i have 103 column in database 1 column is id, 1 is user ,1 datetime, 100 button on webpage 1 textbox to input value , button1 clicked then value in textbox will insert into database with user:=user.identity.nam datetime=datetime.now colum4 will get value from textbox......button2 for colum2 and buton100 for column100, if i use dataset i need 100 datataset, some other way to solve it ??
I `m working in aprojct taht read Excel files then insert tables from excel files to dataset then display these tables into Gridview , All these ok with me
The problem here is
How to insert updated data from gridview to dataset again?
I search for it more & more but i didn`t find any thing to do it
I m having one dataset underwhich i have two DataTables ie Contact & Sales Order.In this two table my ContactId field is primary key in both the tables. I cot some code similar to the following code. But when i copy this code two my .net application it me an error saying semicolun expected ,etc as shown bellow.
Error 37 Invalid expression term 'in'
Because of this i m not able to test the code. can any body tell me how can i achive it . I kust want to inner join this two tables & want to store the result in another data table.
I've got a gridview that will allow clients to edit options they've already entered on another page. The gridview has three radio buttons in it each with a value of 1,2,3. The option value in the dataset is 1,2 or 3 respectively. I would like to have the radiobutton with the corresponding value selected in the gridview so they can see what they previously chose and will then be able to edit, if they wish.
I am trying to insert the data via linq to sql concept. i wrote down the code like this. here customers is the table name in which i want to insert the data. How to achieve it? following code is not working. How to insert the data via this concept.
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click Dim context As New linq_to_sql_classesDataContext Dim custid As New Customer custid.CustomerID = Trim(txt_custid.Text)
I need to insert large amount of data into SqlServer 2008. My project is based on linq-to-sql.
I process csv file with 100.000 rows. Each row is mapped to Order object. Order contains also collection of Category and Code objects. I need to map each row to object in order to validate it.
Then I need to insert all these objects into database.
List<Order> orders = Import("test.csv"); db.Orders.InsertAllOnSubmit(orders); db.SubmitChanges(); OR foreach(Order order in orders) db.Orders.InsertOnSubmit(order); db.SubmitChanges();
Both ways are slow. Is there any workaround? I may use other approach than l2sql for this task.
I read about SqlBulkCopy class - would it handle inserting child entities as well?
i want to insert data into database using LINQ to sql i have textboxes and when i enter data and click the button data has to be entered into the db,i have seen examples and googled but i dint get the correct solution.how to do this??
i want to insert data into database using LINQ to sql i have textboxes and when i enter data and click the button data has to be entered into the db,i have seen examples and googled but i dint get the correct solution.how to do this??If possible give me small example.
I'm using Dynamic Data and LINQ to SQL for some admin pages on a .NET 3.5 web app. All my admin tables have a CreatedBy, CreatedDate, UpdatedBy, and UpdatedDate.I'm looking for a way to inject the setting of these properties before the objects are inserted and updated.
I've seen an object_inserting hook if you have a linq to sql datasource in the web form, but I'm using dynamic data...is there an easy way to generically set that? And I've also looked at modifying each of the partial classes for my admin objects, but the closest hook I see is to implement the OnValidate method with the Insert action.
i have a field in data base that i increment it every time user make an eventthe code i made is taken this field and increment it every time the user make this event. but i need to guarantee if two users click this event in the same time to block data until it saves on the data base.blocking the data base field until the user increment data submitted ??note: using Asp.net 4.0 with SQL 2005
How to Insert data into database USING mvc BASED ON condition...
I want to check condition at the time of insert,Entered TagID exist in database show the error message,Not exist in database store data into database...
ite on dataset model and I used to write sql quires into dataset and call them with in my c# code as usual. and used the datatablein c#code to access the values of each column which corresponds to a sql column in the sql table. after a while I found my website going on too slowso I decided to use linq to sql classes. i can write queries in c# code
The following code works fine for converting an XML data set to be enumerable for Linq.
'Query webservice for data Dim propertyInfo As String = myService.GetProperty(userName, password, Acct) ' Create a new DataSet.
[code]...
However, it does not retain the xml tags in the Linq enumerablerable dataset ('newDataSet2"). I don't think I can rely on the array index order as being the same everytime, so this would obviously cause a problem if I'm trying to align the array items up to my database fields. How can I make newDataSet2 retain the XML tags (column headings) to insure I know what data field each array item belongs to?
