Forms Data Controls :: Gridview Is Caching , Does Not Update
Jan 19, 2010
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?
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May 11, 2010
Background of what I have implmented so far:
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.
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Feb 17, 2011
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.
[Code]....
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Jun 17, 2010
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.
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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.
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Jul 10, 2010
I want to update multiple rows of gridview (only price field. for that i have added textbox) on click of update button which is outside of gridview.I have done following way
<asp:LinkButton ID="lnkUpdate" CssClass="BlueButton" runat="server" OnClick="lnkUpdate_Click">Update</asp:LinkButton>
[Code]....
Up to this its working fine but when no textbox updated then no need to go in for loop so i am looking for confiramtion before updating rows please help me how to do that becausei am less aware with javascript. another problem is textbox value disappear when page index changed how i can retain that values.
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Mar 23, 2011
[Code]....
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Jun 28, 2010
When i try to update a row using the update functionality of Gridview it updates all the rows rather then updating that specific row which is in edit mode.
[Code]....
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Apr 19, 2010
i want to update the data of a database through a gridview update button
how can i attach a dataconvertion like this
[Code]....
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Dec 14, 2010
I have a parent gridview which has a child gridview in the itemsTemplate. Both are binded to different SqlDataSources. I can successfully update and delete rows in the child gridview. After updating in the child gridview, some related data in the parent gridview are not updated automatically. So i have placed ParentGridview.Databind() in the rowupdated event of child gridview. But it doesnt look working.
How can i accomplish this?
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Jan 14, 2010
I would like to ask a question on the visual basic codes to loop the gridview to retrieve the values and based on the values, it will be provided as parameters to update to the database table using stored procedure.
Firstly, I have a gridview named grvProduct. The page (ui) will be loaded with data from the database with the use of stored procedures. And only certain values can be edited through the use of template in gridview. So based on those edited values, I'm supposed to pass these values as parameters to the stored procedure which will then update a database table.
Let say, I have 3 records retrieved from the database and displayed in the gridview. And I would like to edit a values in the 3 records, how do I do batch update and pass those parameters to the stored procedure? I went to debug and step through the visual basic codes and realised there were too many arguments specified because I actually loop the gridview.
Below is my visual basic codes:
[Code]....
Below is my Stored Procedure code:
[Code]....
I believe it is the error in the looping of the gridview which results that I could not batch update the data/values.
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Jul 31, 2012
I have a query . I want to edit the grid view columns in which user click the edit button he will edit the column in the grid and after that i want to add update button so that when he clicks on updates button after editing the row. The row will be updated and the grid will show you the new update row.
Here is my following piece of code.
<asp:GridView ID="noticeDetails" runat="server" BorderWidth="1px" AutoGenerateColumns="false" PageSize="10" Width="100%" CellPadding="10"
AutoGenerateEditButton="true" onrowediting="noticeDetails_RowEditing" >
<Columns> <asp:TemplateField HeaderText="CampaignIDRange">
<ItemTemplate> <%# Eval("CampaignIDRange")%>
[Code] ....
Basically grid is about that when user enter values intothe grid, the values will show in to the grid upon click button.I added edit button it works fine but it will incomplete without update button method ...
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Feb 6, 2011
- I have a Gridview , when i click button edit of each rows to update database in Gridview . So when in edit mode , i want to update database in Gridview by using a button outside of the gridview instead of using a button inside Gridview .
- Here is my code used for update database by a button inside Gridview :
[Code]....
- So how i can do with a button outside Gridview to update batabase? .
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May 18, 2010
I know this is simple and have already googled it, I know we should use foreach loop on collection of gridviews and have our logic there but I am unable to get the row index , If any one could give me a working example ,
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Dec 10, 2010
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.
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Apr 26, 2010
how would i do my Gridview delete command like a update command?
im using a datasource... and my delete command is like my update command... so i can change the status into "INACTIVE"...
DeleteCommand="UPDATE ACCOUNT_MAINTENANCE SET am_status = 'INACTIVE' WHERE (accmain_no = @accmain_no)"
UpdateCommand="UPDATE [ACCOUNT_MAINTENANCE] SET [account_type] = UPPER(@account_type), [min_deposit] = @min_deposit, [min_capital] = @min_capital WHERE [accmain_no] = @accmain_no"
when i press my delete command at gridview... the status changed into "INACTIVE" but when i refresh or press f5... it automatically update the status into "INACTIVE" also...
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Jan 28, 2011
I have a reporting page with a gridview and a calendar. When the user loads the page, the default date is today and when he clicks on a date in the calendar control, it loads the reporting data for that day. Each user has a different report and the data is between 300-500 rows per day. At the moment, I have a linq query that returns the data for a day in the form of a list. Given the relatively small amount of data per query, I'd like to store the result of the query in the session so that I can do the paging and sorting from the session, without going back to the data store.
What I'm looking to do is a list of lists so that when the query loads, the data is saved until the session times out. For instance, if the user selects 4-5 different dates, each of these queries is saved in the session and then if he clicks on one of those dates again, a function first checks to see if the data is in the session: GetQueryFromSession( DateTime TheDate). I'm stuck on this. How do you create a list of lists that works with the session object.
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Jun 22, 2010
Lang-ASP.NET C#
Database-SQL SERVER 2005
[IMG]http://i48.tinypic.com/2sa1iza.jpg[/IMG]
my code
[Code]....
Database Structure
Author_name-Varchar(20)
Book_name -varchar(20)
date_of_issue-datetime
sno-auto identity
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Aug 25, 2010
I'm using an edit button on each row of my grid to popup a set of controls in another div tag. I trying to update a row in the gridview. I have an event grid_RowEditing:
[Code]....
What is the next thing I need to made a drop down list work in the popup?
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Nov 9, 2010
I m trying to edit in gridview. Also i m using footer of gridview to insert data.
[Code]....
My sqldatasource code for editing
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Mar 18, 2010
i can update the first item in the dropdownlist only which called(Flipper) and its image in the gridview,but i cant update the others(River,OK) productsi have two pages,one is display all the product and edit link(hyperlinkfield),when i click on the edit link,it transfers me to theupdate product page(The problem is in this page)AddEditProduct page
[Code]....
UpdateProduct page
[Code]....
updateproduct.cs
[Code]....
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Jan 24, 2011
I have 3 textboxes and one gridview.
When i click on Edit button the entire will store data will store into particular textboxes.
How to do it?
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Mar 23, 2011
I have a piece of SQL that is run when a row is selected for update within a gridview.I want to return a string value from the query.Can this be done from a Gridview SQL Sproc?
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Apr 2, 2010
i created a gridview, in that i retrived the student names and besids that i put a check box,
when ever i check the check box and click on the Update button,
the value of student class will be incremented by one.
example if a student is in IX class that student should be Promoted to X class.
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Apr 2, 2010
I have a gridview that retrieves just fine. I can add rows and that works. I have a stored procedure hooked to the datasource and the sproc will update the database when executed in the SQL studio. It lets me add the update command to the grid and when I click Edit the row changes to edit mode. I change values and press update and it changes back to read mode but no update has occurred. I put a break inGridView1_RowUpdating and the new values are all captured in the e.NewValues element in the debugger, but it doesnt make the change. I am trying to let the aspx do the update; I would normally just write code to do this but if this would work it would save me time. Sesides I've messed with it all night now and it should work, far as I can tell!
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