which is better on grid views to bind, insert, edit, update, delete data rows using datareaders.
linq over sql or ado.net calls performance wise and i am not sure is linq over sql is a disconnect object model?
I would like to get some sample code on how to update the gridview using LINQ.I have a gridview like this
[Code]....
I want to loop through gridviewrowcollection using LINQ but cannot go do it..nstead of doing:
foreach (GridViewRow gd in gdNarratives.Rows)
{
}
I recently created another post (http://forums.asp.net/t/1589122.aspx) that I now realize was barking up the wrong tree... I have a better idea of of the 'ball park' my issue is really in now... in the past, I have used a sqlDataSource control to bind data to a gridview, in which case paging and bidirectional sorting are truly an 'automatic' feature. However, now I am using linq to sql directly to bind data to a gridview, so not only do I need to handle my own paging and sorting, how youdo it is different.... I think I need to actually re-run the linq to sql query on every sort or page action..? well, not sure, that's why I'm posting this. What do I need to do?I'm also wondering if what I will need to do to implement paging/sorting is complex enough that I mind as well be looking into how to implement 'efficient' paging and sorting, as in only actually returning the subset of records that should be displayed?I need some guidance, specifically on paging and bidirectional sorting a gridview control, when the data is being retrieved from linq to sql queries... no datasourceControl
View 3 RepliesI have a GridView using LINQ and I need to do pagination and sorting.
View 2 RepliesI am trying to figure out how to bind my link results to a datasource so it can manage/update/edit/insert/delete without me having to do manual coding for all of it. Is this possible?What am I doing?I have used the LINQ to Active Directory to access our AD accounts. I need to make this a webpage frontend of basic search and managing functionality. I have it searching now and adding the results to a gridview but edit is not working now. I was looking online and I saw something about being able to bind linq results to a datasource and then using the datasource to manage all the information for me. Resources I am using:
BdsSoft.DirectoryServices.Linq[URL]
I use linq query as below and bind it to listview. I have 2 label control (name,remain).I want to check in code behind if p.count<200 then remain ="Sample text1"if price <300 then "sample text2".I know that I could do it before linq in gridview RowDataBound event
Dim prod= From p In db.products _
Select New With {p.name p.category, p.count}
postlist.DataSource = prod
postlist.DataBind()
Executed a linq query, and now needs to bind it to the gridview. here is code that doesn't bind anything currently:
[Code]....
on my WebApplication I have GridViews filled with a LinQ-Query. Like this
Dim teamA = (From t
In datacontext10.T_TEAM
Where t.group =
"A"
Order
By t.sort)
GridViewA.DataSource = teamA
GridViewA.DataBind()
Now I want do enable automated Sorting and Paging? How could that work? Could I use a ObjectDataSource? Which control could do that for me?
I need to display Name1 and Name2 in a single column in gridview. I am using Linq. How is this done.
View 2 RepliesI have a gridview with linq and in the itemtemplate I have a column like this :
Bind("SUPERFICIE","{0:N00}")
If I display my gridview, I have this kind of value : 6'555
When I delete this row I have this error :
Failed to define one or more properties of type DS.MY_TABLE 6'555 is not a valid value for Decimal.
Apparently, when I use a format on bind, it change my values in my ds and I cannot delete my row!
I don't understand, because in my logic with the bind format I don't need to correct some formats for delete a row !
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.
Here's my code so far:
[Code]....
I referred to link to do the gridview paging and searching on keypress event by jquery
[URL] ...
I am trying to convert it using linq to sql. how to execute the procedure using linq and stored the result into dataset.
How to fetch, insert, delete and modify the data in gridview...
View 1 RepliesI'm looking to translate an SQL query into linq
INNER JOIN Usrs ON
SAQ.UserId =
Usrs.UserId AND Scan.UserId =
Users.UserId
I'm not sure how to include the "AND" in the LINQ statement.
i m binding data to Gridview using LinQ i need to sort the Gridview i have no idea how to sort cs i m using LinQ to Bind data with Gridview at Button Click.
View 2 RepliesHow to copy the displayed data from grid view with LINQ?
Example:
In the GridView I have a data:
ID, Surname
1, Surname1
2, Surname2
3, Surname3
How to copy this information in the same GridView and to add new IDs.
Finally, the copy must look like this:
ID, Surname
4, Surname1
5, Surname2
6, Surname3
I have a GridView which needs to get updated on RowUpdating Event. How can I update data using LINQ?
I am populating GV using LINQ too and here is the code for that:
protected void Page_Load(object sender, EventArgs e)
{
string getEntity = Request.QueryString["EntityID"];
int getIntEntity = Int16.Parse(getEntity);
using (OISLinq2SqlVs1DataContext dt = new OISLinq2SqlVs1DataContext())
[Code]....
I have two Data Table, One data table contain Product-A information, and another data table contain Product-B Information, I want to get the uncommon values between the two data table, I would like to achieve this using LINQ, find the sample values below
Product Data Table
Product-A-Id ProductName
W10012 A
W10013 B
W10014 C
W10015 D
Sales Data Table
ProductId ProductName
W10013 B
W10013 B
W10015 D
X10020 AC
I want to find the uncommon data from both data table using LINQ, So find my expected Data Table result is
Result Data Table
ProductId ProductName
W10012 A
W10014 C
X10020 AC
I'm exploring ASP.net. I have created a FormView based on Linq Data Sources. There are several fields in my datasource that are either future or archaic.
1) Do all fields in the DataSource need to have a control in the FormView?
2) Does ASP.net need to insert/update all fields in the DataSource?
[Code]....
[Code]....
currently i am working on wcf...i am adding data through textborex till here is ok. but when i am retriving it from database into grid..but the grid is getting blank...
i am using this query..--page - svc.cs
public List<AddressBook> BindData()
{
DataClasses1DataContext dc = new DataClasses1DataContext();[code]....
I continue to get compiler errors. I have a Gridview (with Delete and Edit buttons) that I populate via LINQ with e-mail addresses. When they hit the delete button I want to use LINQ to delete the row from the table based on the GridView DataKey. If I use Response.Write(ID) it will show the ID number for the Email that I want to delete.Here is the error:
"Error 2 The best overloaded method match for 'System.Data.Linq.Table<Email>.DeleteOnSubmit(Email)' has some invalid arguments C:InetpubwwwrootXXXXXXXXXEditEmail.aspx.cs 53 13 C:...XXXX"
Here is my code behind:
[Code]....
Here is my Gridview code:
[Code]....
Here's my C# cobe behind:
[Code]....
[Code]....
No data is loaded when the button (btnSearchWrd) is clicked. Instead, in the Firefox Error console, it listed these two errors:Error: item is undefinedError: ys.WebForms.PageRequestManagerServerErrorException: Could not determine a MetaTable. A MetaTable could not be determined for the data source '' and one could not be inferred from the request URL. Make sure that the table is mapped to the dats source or that the data source is configured with a valid context type and table name, or that the request is part of a registered DynamicDataRoute.
[Code]....
Above is the beginning of a ListView and its LinqDataSource. When the HTML displays, it picks up only the first record in the table but it's supposed to show a profile page for the user who is signed in (UserID == @UserID).
