Forms Data Controls :: Using FileUpload And GridView Controls?
Sep 3, 2010
I have four controls in my page: FileUpload, LinkButton, GridView, and Button.
FileUpload - I use the control to browse and open an Excel file in the client machine.
LinkButton - I use the control to trigger the method that copies the Excel file to the server, converts the data of Excel file to DataTable, deletes the Excel file, and returns the DataTable.
GridView - I use the control to display the data.
Button - I use the control to save the data to the database.
I did not see any problem until I uploaded the third file that hanged my page. I noticed that every time I upload a file, the page become slower gradually.
Each Excel file has 2,000 records, and every time the GridView displays an item, it searches the data on the database. I think, the more the data in the database, the slower the searches can be.
I set the AllowPaging property of GridView to true. The less displaying of items, the less searching of data can be. But, every time I change the page of GridView, I have to bind again the data to the GridView. In order to bind the data, FileUpload must contain the source file, but not because FileUpload frees the file when the page posts back. And I don't want the user browses the file every time he changes the page of GridView.
how can i link i file upload to a specific row in my gridi have item code column and for each row item code is not the same (no dupplicate)i want to upload excel sheet for each row in grid so how can i use FileUpload inside gridview using itemTemplate and linked it to rowId ??
I have a gridview with edit field. It has a footer row for insertion functionality. Now i also have a fileupload control in footer for uploading files on server. The url of files are stored in sql server2005. Now i have a fileupload control in <edititemtemplate> of gridview which can be used for uploading files while updating of gridview.
Now my req is whenever i upload file with fileupload control in <edititemtemplate> it should update the url of corresponding file in sqlserver2005. My query for update in sqldatasource is-
I've been looking around and trying a lot of different tactics to solve this issue but basically the senario is this.I have a gridview with a fileUpload in it.I can upload a file perfectly and it writes to the database.The trouble starts when I update a different cell and don't touch the cell with the fileUpload in it,it'll postback a null value to the database.
How can I keep the fileUpload control from sending a null on postback to the database so it won't clear out my entry if there isn't a new one to replace it?Or alternatively,how to I default the value to the old value on postback if nothing was entered through the FileUPload control?
I'm using FileUpload Control to update a table and it works fine but,the issue arise when not entering a file, then the record set the picture field value to NULL
Couple quick questions:What's the difference between FormView1_ItemUpdating and FormView1_OnUpdating? Do they occur at different times in the update process?Still can't get my code to upload the file...what am I missing?
I'm making a fairly simple online database where a user can upload a PDF file, along with 4 other data fields to a SQL DB. I have it working ok, sending the PDF to the DB as binary data. The problem is I would like to use a ListView control for the user to enter all of their data and choose the file to upload. When I use a ListView I receive the following error:
No mapping exists from object type System.Web.HttpInputStream to a known managed provider native type. I've included the code I'm using to send the file to the DB (protected void ListView1_ItemInserting),
I have two fileupload controls in footer of gridview with their corresponding checkboxes.
The autopostback property is set to true for both the checkboxes. Now after uploading file on one fileupload when i check the second checkbox, it detains(losses) its value.
How can i retain the value of first fileupload control on postback
I've been searching on this question for hours and not finding a solutionI simply want to access a FileUpload control in the EditItemTemplate of a FormView.When the FileUpload control is outside of the FormView, I can access it like this:
[Code]....
Visual Studio says:"The name 'UploadImage1' does not exist in the current context" It says this about any controls I've put in the FormView.How do I access these controls in my c# code behind?
How to get data (read file) chosen in FileUpload control without FileUpload.SaveAs Method on the server? Is it possible write it at once to some object?
I have a MultiView inside an updatePanelThis MultiView has 7 Viewin each view I have Two button (next, prev) I have two fileupload in view6 and two button (btn_nextSix and btn_prevFive)I put this code in updatepanel
And found after click on btn_nextSix, fup_pic.hasfile is true but by clicking in last button (btn_reg) I found fup_pic.hasfile is false so I changed my code like this (I putted all buttons in multiview in triggers)...
I have a dropdownlist outside the gridview control. My griview control also have dropdownlist in the first column. I want to populate the dropdownlist inside the gridview control for all rows when the selected item is changed in the outside dropdownlist.
My Development Server has: Windows 7 Home Premium 64 Bit IIS 7.5 ASP.Net 4.0
When I attempt to upload 1 file under 4mb, everything works wonderful When I attempt to upload 1, 2 or 3 files with a total size under 4mb, everything works wonderful When I attempt to upload 1 file, over 4mb or When I attempt to upload 1, 2, or 3 files that total over 4mb, a problem arises! And Continue to read and not assume it's just my Web.Config file, for I did attempt to set the maximum upload size to higher than 4mb, a copy of my Web.Config is included below!
Here is my Problem:
I have a need to upload 3 Files, 1 File being a .jpg file and the other 2 files will be .mp3 files. If I try to upload 1 file that is over 4mb or if the sum of the 3 files is over 4mb, I get a> The Regular Debug Message:
Maximum request length exceeded.
Description:
An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: Maximum request length exceeded.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
I'm having trouble with inserting the (Multiple)dynamically created FileUpload Files in database, since i'm using javascript to generate the function dynamically.
I would like to find controls in the detailsview control placed in the EmptyData Template of the gridview. I am trying to create Insert new record for the gridview control.
1. If there are existing records in the table - works fine and sets my two values: I placed Detailsview and Insert Button in the footer of the gridview. I needed to set the values of two fields. When I click on the Insert button it saves new record and sets the field with the value (code attached - works fine). I also have a popup extender that opens detailsview - this works just fine.
2, If ther are not records in the table - saves record but cannot find and set controls on the detailsview Same thing setup in the EmptyData Template. The record is saved but I cannot Find and set the field value on the control.
1. Link button (on click) in the gridview footer (works fine)
How to edit gridview row when not using sqldatasource and autogeneratecolumn property is set to true.I have a dropdownlist where table is selected on which gridview is populated (through sp from oracle) which is working but edit command is not working.Do i have to generate template myself or what ever solution?
I have the code below. If there exists gridview within gridview, how can I access hdnOrderLineID from gvwComponent_RowDataBound in inner gridview RowDataBound event. What should be the syntax???
