Data Controls :: Caching Dataset When Binding To GridView
Apr 26, 2012
I have webpage with three dropdown boxes on left side (Country Dropdownbox, State Dropdownbox, City Dropdownbox) and these dropdown works independently or one box will depend on another. I have a gridview in right side and the results will be binding to the gridiew by selecting the left side dropdown boxes.
I need to implement the caching technology here because the web page loading very slow due to large amount of records. For example if i select any country from the first dropdown box and the other two boxes are default (Selected text is "ALL"), then It should display records related to selected country in gridview.
Further if I select country and state from the respective boxes then it should display the related records in the gridview like so on. Now i want do some caching functionality to improve the performance. I tried caching the Dataset while binding to gridview but in my case the results will not be static becasue user every time will select different options from different dropdown boxes and results will come based on the selected options.
I have a set of dataset with different column retrieved from DB. I need to present the datasets in one GridView (or other ListView etc...) without specifying the column_header. It should present automaticly since the GridView is bind to the DataSet.
In additional, I want this GridView to handle multiple rows edit and update the dataset, idealy, show data in textboxs in initially.How could I set the GridView to edit_model without hardcode column_header and textboxs in 'itemtemplate' or filed.
How could I achieve the bulk edit and update, so that I can assign 'mydataview1.table' to the dataset.
i have this xml file which i read using the DataSet.ReadXml( path ) method . The tables created from the Xml file is Related in such a maner that each product has many options. Product is in one table and Options are in another.Now all i want to do is display the related tables in One Gridview. For your reference below is the products Xml file,
[Code]....
Now this is what i have done in the Code behind , have a look below
[Code]....
Now the Grid works Great if i want to Display Individual tables out from Dataset but not when they are related . Please do shine your Knowledge on what should be done to display Child ~ Master relationship. By the way , its a definite NO for someone who would show me that link from msdn about displaying XML data using Xmldatasource and gridview [That's a lousy way to display data]
I want to bind data from database to Dynamic Grid-view Control with textbox and dropdown using dataset.
I have successfully inserted data to database using this code but now i want to fetch inserted data to same grud view control. i have tried following code. but not getting ans.
SetInitialRow(); string ID = 101; foreach (GridViewRow row in Gridview2.Rows) { string str1 = "Select * from VendorInvoiceDetails where Invoice_ID='" + ID + "'"; DataSet ds1 = GEN.GetDataByQuery(str1);
- i have two drop down lists- ddl_SelectClient, ddl_SelectApplication
- when a client is selected in ddl_SelectClient, i have to show the list of the clients applications in ddl_SelectApplication
- i have written the below code in the ddl_SelectClient_SelectedIndexChanged routine to do the same
- i am getting the error("Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack") in the catch block when the ddl_SelectApplication gets binded
I am using subsonic in asp.net forms C# and I have an instance where I need to loop through a recordset and for each one call the Database to get specific information from a view about that record.
in this instance it is a venue, loop through and for each venue I show there spend and there budget, but I am at a loss as to how I can say use a gridview, execute more code on each row and then add more columns to that row.
just as an update i have been playing with the idea of something like this:
DataSet ds = new DataSet(); ds.Tables.Add(LinqToDataTable(club.All().Where(x => x.level == 1))); ds.Tables.Add(LinqToDataTable(ViewBudgetSpend.All().Where(x => x.periodfrom == curperiod))); DataRelation relation = new DataRelation("budgets",ds.Tables[0].Columns["clubId"],ds.Tables[1].Columns["clubid"]); ds.Relations.Add(relation); still working this out though.
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'.
I've used datagrid view to show a list on records on page, the list contains huge number of records so paging was required. Since the amount of data was huge it was not advisable to bind the grid with complete data. So, I used custom paging and tweaked the sql statements to get page wise data. Now whenever user clicks next or previous data for current page is fetched from the database and gridview is binded with that much data only.
Now I had to add a checkbox column to the grid so that user can select multiple items on multiple pages and perform an operation (for example send email to selected people in the list). I achieved this by making a template column with checkbox control and keeping a boolean column in the datatable which is binded to the gridview. I've also kept a collection selected checboxes so that the state is maintained on every postback.
I've also used ajax so that user cannot see postback happeneing. Everything works just perfect.Here comes the problem:
Now say I have 5 pages of data to be displayed. I select 3 people from first page and move to next page, this will cause fresh databinding and previous data will be lost.Now I go on and select 3 more people from page 2Finally press the send mail button What is expected here is that the mail should be sent to 6 people but details of only 3 people are available because grid is rebinded.
What is the best way to cach data of selected rows in this case. The number of columns is around 20 out of which I show only 10 columns on screen and others are kept hidden. The values of hidden columns are used while sending the emails.
I've this Gridview of tasks a Hyperlink TemplateField that takes the user to another page where he can accept/reject[buttons] the very task , on clicking accept/reject[buttons] the page redirect the user again to the tasks Gridview , unfortunately , the same task is still there unless if the user manually Press F5[Refresh] I tried the following nothing worked
1- EnableViewState ="false"
2- In the ObjectDataSource , EnableCaching ="false"
3-i tried to use Ajax but it gives me a whole lots of errors from the webconfig ,my website is working ,I can't stop users from accessing my site in order to wrestle with Ajax
the approach I am taking on developing my site is to work in my local machine when I am finished with my changes I literally Copy/Paste the new aspx/aspx.vb overwriting the old file with the new one , this approach is working fine but it causes the server to a bit slow esp. in the first time after change, is there a more Professional way?
I am trying to speed up a Gridview on my page that reads 8,000 records using an AccessDataSource. So I am trying to implement caching. I have used the information given here: [URL] but it has made no difference in the response time. Can anyone direct me on this? Is there something you have to specify in the gridview (besides the datasource). Would it work if I went to SQL Server?
This is my AccessDataSource code. You can see the 3 relevant lines starting 6 lines from the top.
In 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:
I have a DataSet with multiple DataTables and I use an ObjectDataDataSource to bind my DataGrid to it. One of my tables is correctly displayed in the grid. My problem is, that the grid displays the wrong table.
My tables are related to each other - I make use of the "relation" objects in VS Studio 2010. My ObjectDataSource points to a class with a select method. The DataSet contains several DataTables (e.g. "Variables" and "Components").
[Code]....
How can I configure the DataSet to display the table "Variables" by default?
I have 2 gridviews on a webpage that are fully editable. I also have a button, that when clicked, runs some SQL in codebehind to insert new rows into a data table. The gridview should then update with the latest results of the SQL query, which is does.
Then the user clicks on to the next page to do the next thing.The problem is, when they go back to the first page, they're still seeing the old, non-updated data. I've run the SQL from the page manually on the server, and the new data is there, but the GridView doesn't want to pull it.
If the gridview binds to empty dataset, I need to still show a gridview so that users can ADD more using the textfields in the bottom of the footer template. Since the gridview is empty it won't bind not allowing rendering of the <footer template> I guess I should create a empty dataset if the gridview is empty. How do I check for this and can this be done in GridviewRowEventArgs
Codebehind: creating dataset, getting data from sql with adaptor and filling into dataset object, then setting detailsview's datasource. I add 2 button to above template to able to edit data at asp page, and added event handlers:buttons:
[Code]....
My question is, what to do inside the detailsview update event function to able to edit and update data. My method can be wrong too.
I have a grid in 1st page and one link in it.If i click that link it should open a popup which has a grid and it should bind data according to the row information.In my grid its displaying columns evrything in popup but data is not displayed.
I am converting a VB.net project to c#. I am trying to bind an xml file to a DataGridView, however DataGridView does not have a DataMember property. How do I set the Datamember in C#?
I have a dataset which I bind to a gridview for display. Normally, the gridview shows the dataset table column name as the column header and the data is bound vertically - i.e. the dataset table rows are created in a vertical/downward fashion. What I would i like do however in my application is to get the GridView to bind in the horizontal direction. So the data that is bound "moves" towards the right. Before suggesting a repearter or datalist, I also have a requirement to not wrap. I have not been successfull getting the repeater/datalist not to wrap unless you know of a setting you can share.
My message application uses a gridview to display user messages. One colunm determines the priority of the message (high, low or no priority assigned) if the message row is empty put nothing in the row else put a ! in the row (to show high priority). Question is don't I need to bind that colunm and row?
I have a GridView bound to a DataTable. The DataTable has a Deleted column that holds a boolean value describing whether the row is logically deleted; I need the row to physically remain in the table. Is there a way to skip over rows whose Deleted columns are set to true in the GridView's onRowDataBound event? The closest I could get is marking the row's visibility property to false, but this does not help me because it throws off paging and the GridView's alternating row color.
