Forms Data Controls :: Access Gridview In Webmethod?
Jul 19, 2010
i m using Gridview which contents images.Every time user uploads images that images are get inserted into gridview .That is on button click event i m binding grid. But by doing so , every time when user clicks button page is get refreshed. So to avoid this i used WebMethod in which i m trying to bind gridview , but as Webmethod is always static i m not able to access gridview. So my Question is can we access Gridview inside static web method.If No Why?
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Feb 25, 2016
my Requirement is: when user clicks on search button ,i need to call a ajax post method from client side and have to access the request.querystring(to get some info of logged customer) in static web method?
Tried things:
1.unable to access the request.querystring in static web method
2.saving the request.qerystring data into viewstate/hidden filed,but unable to access non static fileds in static method?
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Sep 20, 2015
I am developing a application in which I return the value a it will fine it give me value during debug when I put cursor on .value it give me HiddenField1.Value 140 value but how I get this value into jquery code I will try a code but every time give me empty value means this value can’t assign to grid view following my whole code
var HiddenField1 = a;////////////////////////C# code where give me value of a
HiddenField1.Value = a.ToString();
My hidden field and Function to access the hidden field value
<asp:HiddenField ID="HiddenField1" runat="server" value="" />
Method to access the hidden field value in Jquery code.
var HiddenFieldcheck= $('#HiddenField1').val();
alert($('[id*=HiddenFieldcheck]').val());
but every time it give a empty value how I solve it ...
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Jul 31, 2010
I am unable to access the data in the gridview's selected row. I have done this lots of times but must be forgetting something.
Here is my gridview:
[Code]....
[Code]....
[Code]....
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Jan 10, 2010
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.
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Mar 17, 2011
I have nested 2gridview. I want to access textbox in second gridview footertemplate. How can I do this.My code is
[Code]....
Code Behind
[Code]....
Iwrite this code but I get
Object reference not set to an instance of an object.
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Oct 28, 2010
I have a nested gridview which has been working fine. Now I need to turn the inner gridview off based on some condition: a IF block is added to the existing RowDataBound event of the outer gridview. Now I'm getting "the Object reference not set to an instance of an object" error. What should be the proper way to go about this? The code:
[code]....
In addition, is there a way to "switch" columns of the inner gridview? For example, column 1 is "City", column 2 is "Price". If user selects to sort by "Price", I woud like column 1 be "Price" and column 2 be "City". Is this has to be done programmatically or if there's other way?
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Dec 7, 2010
I have a pagemethod defined with the attribute [WebMethod]. The pagemethod accesses the session with no problem (HttpContext.Current.Session).
However I just read somewhere that in order to access the session in a WebMethod, you need to define it like so: [WebMethod(EnableSession=true)]
So my question is, what gives? How come I can access the session even though I dont have that code? Apparently EnableSession defaults to false if its missing, so I should not be able to access the session. The web application uses ASP.NET 3.5 and uses InProc Cookieless sessions.
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Jan 7, 2011
I would like to write some html content to div element through web method. The web method should be like
[System.Web.Services.WebMethod]
[ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
public static string LoadImages1()
{
[Code]....
without passing data to success block, I have to write at webmethod it self.
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Aug 8, 2010
I have a custom class library that performs validation. I want to open up this class for use within Javascript. I understand that I can easily achieve this by utilizing WebServices/WCF or by creating a function on my page with the WebMethod attribute, but it'd be nice not to have to set all that up for every project.
Ideally I'd like to just add the WebMethod attribute to my class library methods and then call them using Javascript.
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Apr 29, 2010
How to Access Webservice Webmethod in Javascript
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Mar 30, 2011
This is my code and i am only able to edit the one data under the category school.But what i nd is to edit the other categories like the name,email...etc..how do i modify my code in the update command.Another thing is to delete the data how do i do that?
[Code]....
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Jul 22, 2010
Within a WebMethod I need to access a Page Property. The code is generating an error:
Cannot refer to an instance member of a class from within a shared method or shared member initializer without an explicit instance of the class
Is it possible to access page properties from WebMethods?
Here's my code:
[Code]....
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Mar 25, 2010
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???
[Code]....
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May 14, 2010
I have created a gridview at runtime. See code snippet. My problem is when I hit edit on the gridview, and check the ManuallyResolved checkbox in the 2nd column, and hit update, it won't update. I'm not sure how to get the update to work with the dynamic checkboxfield. I just don't know what the code is and in what procedure to put it in.
[URL]
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Apr 12, 2010
I'm attempting to create a mailto in a gridView as follows:Code Behind (Page_Load)
[Code]....
ASPX Page
[Code]....
The hyperlink field will not grab the mailString variable. It's blank whether I use my constructed string or just the basic "TEST" string. What am I doing wrong?
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Nov 5, 2010
I have a gridview. In my RowDataBound handler I'm doing some things to columns, and accessing them like this for example,
e.Row.Cells(7).BackColor = System.Drawing.Color.Salmon So, of course when I rearrange the order of my columns everything breaks.
Isn't there some way to give an ID to a column, and say e.Row.Cells("TotalColumn_ID") ?
Will this work? Do columns have IDs?
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Mar 24, 2010
I am using C# with Access/SQL databases. I have this piece of code for a nested gridview using access database working fine:
private AccessDataSource ChildDataSource(string strProjectCode, string strSort)
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Jan 31, 2011
how to access the last column of a gridview whose number of columns are varying
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Sep 17, 2010
I've searched for this problem on Google and also on this forum (and also this forum using Google) so if there is another topic dealing with this I apologize but I couldn't find it! :)
My problem is that when I try to access the HeaderRow property ASP freaks out and gives me the infamous 'Object variable or With block variable not set.'
error. Here is the code in question:
Public Sub gvwResults_DataBound(sender As Object, e As EventArgs) Handles gvwResults.DataBound
gvwResults.HeaderRow.Cells(7).Visible = False
For Each gvr As GridViewRow In sender.Rows
gvr.Cells(7).Visible = False
Next
End Sub
The line 'gvwResults.HeaderRow.Cells(7).Visible = False' is what raises the error. When I remove it, the code works just like expected except that the header row of the 8th column isn't invisible like I'd like it to be.
I'm pulling my hair out here, this is the very last thing that needs to be finished before this app is usable haha. :)
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Dec 28, 2010
I have two databases (DB1 & DB2) from which i wish to build a single table/gridview output, ideally i want to be able to sort the table by using any data.
However i cannot seem to figure out how to have more than one datasource per Gridview, and if i have more than one Gridviews then i can't sort all the data by any of the columns.
This is a oneway street, i do not want to update the databases from the webfront end.
Here is a Trimmed Down Version of what i have
[code]....
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Aug 17, 2010
I have a "simple" gridview that has some columns, and the ability for editing/deleting. I recently found that I can change the editing textbox to a dropdownlist and have follow that, using:
[Code]....
It's quite simple and instead of using an sqldatasource, I have successfully implemented using the sqlclient in the codebehind to bind data only when I want (since this GridView is for "reports" and is queried by many parameters from user inputs).From what I've found online, the only way people have populated the dropdownlist is by using an sqldatasource - is there any way to populate it using the codebehind sqlclient like I have for binding the gridview and other dropdowns on the page that are exactly the same actually. I'd obviously have to set the SelectedValue to be what the value is coming from the database, which I can't see being that difficult.
The tough part seems to be knowing when to access this "MoneyTypeEdit" dropdownlist. I thought it would be in the RowEditing event, so I tried something like:
[Code]....
And I know everything outside of the "inserted code" works, because it was fine before I added that, but the dropdown obviously didn't have any values. And I know the code inside the "inserted code" works because I use it somewhere else on my page to populate a similar dropdown. But I get the error that MoneyTypeEdit is null, and I'm guessing it's because it can't find the "MoneyTypeEdit" dropdownlist.
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May 3, 2010
i am doing a gridview which consists of 1 checkbox,1 linkbutton, 1 textbox and 1 image button. For all the cell which has the checkbox checked, i need to collect the data and update the database.
Form the gridview, i need to collect few information before i update the database. That is the cell informaion (checkbox and textbox), and also the Line information, shift (Grave/Morning) and also the date.
I am having problem in reading out the date of each cell belong to. By using the code GridView.HeaderRow.Cell(n). text , i only able to access shift information.
The Date Information is done by adding additional header row and its coding is as below:
[Code]....
The img of my gridview:
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Jan 18, 2011
i have a div inside a gridview. Now I need to access the div from code behind to change its background color
for some specific data.
[Code]....
I am trying to access the DIV from gridview row data bound without any success.
[Code]....
I have the following error
"System.NullReferenceException: Object reference not set to an instance of an object."
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Nov 9, 2010
I have seen a lot of things on the net on this but nothing seems to work. I have a GridView with name and other information on files stored in a database but also on a Server. I display the gridview with the files and the user selects the file to delete (row) by hitting the command field for Delete. I have an event on the gridview for code behind. Here I want to access the file name for the row selected, to be able to include it in the File.Delete statement.
Even before this I want to display the selected file name in a label back to the web page. I have tried everything including findcontrol selectedValue, etc. Nothing is working. I either get complier error, or nothing is displayed in label. If I let it go the the File.Delete step I get access error becasue there is no file name. HELP. here is screen shot of the gridview. Ignore the download button for now. That is my next headache to figure out. So based on the screen shot I want the value of log_doc from the gridview. It is in a column called file_name
File ID
File Name
Log
Upload Date
Uploaded By
Download
Delete
3
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