Winforms - Why Is There A Databind() For Gridview

Mar 5, 2010

Why is there a need to explicitly call GridView.DataBind() to render the gridview. Why wouldn't it render by itself automatically like how it happens in Window Forms?

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Web Forms :: Databind() In Gridview Does Nothing In IE / Databind Doesn't Show The Updated Grid

Mar 21, 2010

i'm opening a new window and passing on to it variables in a querystring, the values are loaded into a function that is filling my dataset and then filling my Gridview. after i press the button field in my grid to delete an item, the databind doesn't show the updated grid but remains the same. i've noticed that if i navigate back and refresh i see it correctly. in FF btw no problem.

the code:

this is used to open the new window





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Gridview Rowdatabound Event In Winforms?

Dec 12, 2010

in we can handle the RowDataBound event of the GridView control. this event fires when every row is added to the gridview.

i want to be able to handle this event in the gridview in a winforms application but i cannot find a similar event. my question is what is the event name that allows me to do the same as RowDataBound in

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Forms Data Controls :: Gridview Inside User Control Databind/how To Set The Datasoruce Property Of Gridview

May 8, 2010

I am developing a usercontrol which has a gridview control in it.

Now I want to set the datasoruce property of gridview. Datasoruce will be a generic list (List<Class>).

How to do this ?

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Gridview With Navigate URL Databind

Sep 11, 2009

This should be simple but I can't figure it out. I have a grid view that includes a link. I am trying to bind date to the navigationURL. The data includes the id (primary key) and confirmNum from the DB. I have the id working but can't get the confirmNum to show. Here is the code:

NavigateUrl='<%# DataBinder.Eval(Container, "", "MyRequests_Full.aspx?id={0}" + "&confirmNum=DataBinder.Eval(Container.DataItem, "confirmNum") %>'
Any Ideas?

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Databind A Caption When Using A Gridview?

Jun 9, 2010

Can you databind a caption when using a gridview?

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C# - Programmatically Databind A GridView Control

Sep 27, 2010

I have a blank/unbound GridView control on my form and I am binding it in the code behind like this:

GridView1.DataSource = _dataSet

Running this code populates my GridView control with all the columns and data that _dataSet has. I want to display only some of the columns, change the column names, and rearrange some of these columns too (i want the last column from the actual sql database table to be displayed first in my GridView).

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C# - Databind A Gridview Populated In The Code Behind?

Nov 16, 2010

I have tried a lot and have reached a dead end.

I have a to show multiple gridviews on one page and all these are getting populated dynamically.

i have figured a way to populate the gridview dynamically and display them, but i cannot get how to modify these values and display them as i want.

here is the code. for .aspx page


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C# - DataBind User Controls In Gridview?

Jan 26, 2011

I got a GridView in ASP.Net in which a user control is placed:

<asp:GridView ID="GVWunitcollection"

I bind the GridView to a List<T> filled with custom 'Unit' Classes. Each Unit consists of several properties to fill the usercontrol. (The user control holds a table, and some labels and textboxes).How can I achieve this? Is there a simple way to bind each usercontrol to the appropriate Unit?By the way, this is my way to mimic a "dynamic" behavior of multiple usercontrols on a page. If there's a more simple way, I would like to know how!

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C# - Show GridView Inside Login With Databind In C#?

Mar 17, 2011

If outside the loginView, the gridview can show correctly! Put inside Login View and use below code

<asp:GridView ID="GridView1" runat="server">
((GridView)LoginView1.FindControl("GridView1")).DataSource = query;

Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Source Error:

Line 22: ((GridView)LoginView1.FindControl("GridView1")).DataSource = query;

How to show GridView inside Login with databind in c#?

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C# - Databind A Gridview To A Field In A Base Class?

Nov 16, 2010

I have the following classes (pseudocode):

Item ( int Field1 )
ItemDetail : Item (int Field2, string field3)

If I set ItemDetail as the datasource for an gridview:

grid.DataSource = new List<ItemDetail>();

Can I use Field1 in the GridView? If so, what is the correct DataBinder syntax? The following code blows up trying to cast to an Item:

<%# DataBinder.Eval(Container.DataItem, "Field1") %>

EDIT: And I'm a moron. I had copied the gridview and was calling a RowDataBound event handler for a different grid... Sorry to have wasted everyones time, but there is some good info here regardless if anyone has the same question. In the end, the public properties of the base class are binding correctly.

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C# - Extension Method Parameter In Gridview Databind?

Jan 18, 2011

I'm binding an object to a gridview. The object (LeClient) consists of several variables, two of which are related to its phone number. One variable contains a string of digits (LePhone) and the other contains an int that represents the country code (LeCountryCode). I have an extension method for strings that works to format the string LePhone and that I'd like to pass it LeCountryCode as the parameter.

So far, on RowDataBound I have an event handler with the following line:

e.Row.Cells[5].Text = (string)(e.Row.Cells[5].Text).ToPhoneFormat(1);

I'd like to replace the 1 with the corresponding country code that's stored in the object LeClient associated with the row. How does this work? I tried


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C# - GridView.DataBind Not Refreshing The GridView?

Feb 13, 2010

To start I am using a MultiView control to step users through searching. The first page in the MultiView is just a search box with a button to preform the search.

The second page has the GridView, but I would like to keep the search box and button for the user to search again if they didn't find the user they were looking for.

When you search from page one and move to page 2 the GridView shows the correct results. But when it is on the second page with both the GridView and the search the GridView doesn't update. Below is the code I'm using.


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Web Forms :: Databind Gridview Based On Selected Value In Dropdownlist

Oct 16, 2009

I have a dropdownlist say ddl1 and a gridview gv1. Based on the value selected in ddl1 ie ddl1.selected value , I want to populate selected rows in the gridview .

dim returnvalue as datarows()"month = '10-2005'")

where month is a column in my table The above code works but I want to check if rid matches ddl1.selectedvalue. I have tried this"month = 'Cstr(ddl1.selectedvalue)'")...but it doesnt work

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Forms Data Controls :: Get Error On Gridview.databind()?

Jan 25, 2011

i am getting following error on gridview.databind() Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack , ThreadAbortException,it was working fine and suddenly getting error, i don't what's problem is?

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DataSource Controls :: Using Stored Procedure And Using Databind For The Gridview?

Oct 29, 2010

am having trouble figuring this one out. Am using stored procedure and using databind for the gridview . i got the codes off other sites. I'm guessing its the code that i've underlined, how or what do i use as the datasource for the sorting event. I used the Session for the paging event and that works but not for sorting.


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Forms Data Controls :: Gridview Not Refreshing After Databind?

Jun 26, 2010

I'm working on a project where I have to create a page that displays the "health" of a system. I run a query and display the results in a gridview with a red or green icon next to it. This works fine when the page is first loaded. My problem is that I have a thread that runs a query every 30 minutes and rebinds the gridview but the gridview never refreshes even though the data has changed. How do I get the gridview to display the new results? The databound event never fires a second time even though I can clearly see that I have received new data. I assume I am missing something simple but I just don't know what. What am I doing wrong?

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Forms Data Controls :: When To Call DataBind On GridView

Sep 2, 2010

So I have a GridView and several events that can be triggered (such as filtering and inserting a new record) to manipulate the GridView. I want to make sure that I'm not calling DataBind on Page_Load, especially since I might have to call it again when certain events fire. Is there a way I can make it so I only have to call DataBind once on the GridView after Page_Load and anything else has fired? Like some event that will absolutely fire last where I can put my DataBind?

The reason I need to do this is because the DataSource for the GridView is set programmatically from a DataView when the page is loaded, so DataBind needs to run every time. Just, hopefully, not multiple times each time...

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Forms Data Controls :: Position GridView After DataBind?

Mar 7, 2011

I have a gridview positioning issue that may have been answered elsewhere, but I couldn't seem to find a similar post...

I have a webforms app containing a paged gridview (e.g., 200 records - 50 rows and 4 pages).

When the user clicks on a button in a specific row, another web page is launched to process that button click. When the user closes that page to return to the main gridview, the databind event is rerun and the page redisplays the gridview starting at the top. However, I want to have the previous position maintained (like an html bookmark), so that the grid will automatically be scrolled to the the previously clicked gridview page and item.

Setting attributes such as "MaintainScrollPositionOnPostback" do nothing in this case.

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Gridview Databind / Make Column 2 Contain 2 Objects From TheSource?

Jan 15, 2011

I'm doing a gridview with an object datasource:

List<MyObject> TheSource = a linq query

At some point, I have

MyGridview.DataSource = TheSource;

and an OnRowDataBound event handler that's tied to the databinding.

In that event handler, how do you make column 2 contain 2 objects from TheSource. For instance, in the TheSource, there is a variable for FirstName and another one for LastName. Column 2 needs to contain both the first and last name in the same cell.

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Forms Data Controls :: Cannot Trigger A Postback / Databind Of Gridview

Apr 23, 2010

I am have a page with a couple of dropdowns which serve as criteria for a select SPROC. Once a selection is made in a drop down a panel is shown which contains gridview whose rows have been returned by the select SPROC.If you close the panel and change the drop down selection and then redsplay your panel the data from your prior selection is still displayed in the gridview,
unless you page to the next group of records.

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Prevent Databind On Gridview When Clicking The Edit Template Link?

Aug 3, 2010

My Gridview is refreshing its datasource when the edit button is clicked. How can I prevent this from happening? This isn't much of a problem when there aren't a lot of records, but when there are many it takes awhile. The data is already loaded so the edit button shouldn't need to reload the data. The edit button is a template edit button, and I'm using an SQL Datasource that connects to an Oracle database. The SQL datasource uses a control parameter that points to a dropdownlist.

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Forms Data Controls :: Increase SQL Timeout On Gridview Databind?

Sep 16, 2010

Getting the following sql timeout on a page System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.


While I know I need to review the actual Stored Procedure used, can someone point me to a quick fix to increase the timeout on the databind.

Below is my datasource


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Forms Data Controls :: GridView - How To Add Text To A Column After Databind

Dec 28, 2010

I have a gridview which is populated by SQL command at page load. Here is the sample below;


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Forms Data Controls :: DataGridView Equivalent Of GridView.Databind()?

Nov 12, 2010

I have spent most of my time writing ASP.Net web pages, using VS 2005. I am now developing some client function for Windows, so I'm relatively less expert in VB.In my Windows program I have defined a DataGridView and linked this to a data table (within a tableadaptor). Now I want to populate it: on a web page's code-behind I would write Gridview.databind(). What is the equivalent with a DataGridView.

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Forms Data Controls :: GridView Links Dynamically DataBind ()

Dec 22, 2010

I've this table Table1(ID , LinkURL , LinkText )

I would like LinkText to display as a link. And when you click it takes the value from LinkURL and directs you to another page.

This is the code:

<asp:GridView id="GridView1" runat="server"></asp:GridView>
And this is the code-behind:


Dim reader As SqlDataReader = cmd.ExecuteReader() [code]....

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Forms Data Controls :: DataBind A Gridview After DropDown Change?

Aug 21, 2010

I have a drop down menu that is populated on page load. Below that, I have a gridview that has a select parameter based on that drop down menu's value. I can't get the gridview to populate with data based on the drop down. If I fill in the parameter with a constant, the data pulls fine, but when I switch the parameter to a form parameter, it won't pull.

Here is the relevant piece of the aspx page:


Here is the relevant section of the code behind:


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Forms Data Controls :: Insert Rows In GridView On DataBind?

Oct 3, 2009

I have a GridView which is databound to a database table. Let's say each record contains a date and the monetary profit for that day. Now here's the problem. Some dates have no record in the table because the store was closed or it's just so shitty that no profit was made. As a result the gridview looks like the following:

10/01/2009 $200
10/02/2009 $250
10/05/2009 $300
10/07/2009 $210

Obviously if there is no record, no row is inserted into the gridview. Instead, I want the gridview to display the results as follows:

10/01/2009 $200
10/02/2009 $250
10/03/2009 $0
10/04/2009 $0
10/05/2009 $300
10/06/2009 $0
10/07/2009 $210

So in other words, when there is no record, I want a row to be inserted into the gridview with the missing date and $0. How would I acheive this? I'm assuming I'll need to use a DataTable and perhaps do some stuff in the DataBind event of the gridview

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Forms Data Controls :: DataBind A GridView From A Child Form?

Oct 9, 2009

When I click a button on a Child form how do I get it to do a .DataBind on a GridView in my Parent form?

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Forms Data Controls :: GridView - Databind To A Collection Within A Custom Datasource?

Jun 14, 2010

I'm trying to databind my GridView to a custom datasource where one of it's members/fields is a collection.

Custom object Entry

public List<EntryHour> Hours { get; set; }

In practical terms, one row consists of some normal text fields which is easy to handle. However, the Hours field is the nut to crack.

How do I, in the GridView markup bind my textfields in question to the Hours field (which consists of 7 items allways)?

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