Forms Data Controls :: Gridview Paging Clears DataKeys?

Jun 21, 2010

I'm using a Gridview with Paging enabled. Also i'm using the Datakeys in Gridview. I can able to get the DataKeys values on first page. But when i click on the second page, i'm not able to get the DataKeys values. How to get the DataKeys values on Paging.

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Similar Messages:

Forms Data Controls :: ListView Paging Dies Using Datakeys?

Mar 19, 2010

I've got a big problem here with the ListView control. Basically I've got very basic code, yet it seems to break the control completely.

Here's the deal, I got a simple ListView using an ItemTemplate containing a hyperlink. Obviously the hyperlink has to lead somewhere after clicking, so the datakeys enter the scene since I need to hook up a hyperlink containing the Id of the record it's in as a parameter.

Normally this shouldn't be a problem, so in the itemcreated event I look up the link control and add the url using data foud in the datakeys.So far so good, this all works out fine.

Now this contains a number of records, too many to display on one page, so I decided to implement paging by using a DataPager, which is the way to get the ListView to support paging. This didn't work.

After a little tinkering around with the code, I found that if I didn't get any datakeys in the itemcreated event, that it all works fine. However, I need to use the datakeys or I won't be able to hook up a url to the hyperlink.

Basically, that one line of code completely kills paging. Commenting it out immediately sets things right, but that's not an option.

[Code]....

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Forms Data Controls :: Using Datakeys In A Gridview?

Jul 16, 2010

I have a gridview with a linkbutton in each row. When I click the linkbutton it should update the status of a field from enabled to disabled. I am using a stored procedure to achieve this but i need to pass in a ApplicationID which i am retrieving from the gridview through the use of datakeynames. I am using the code below to get this value into a variable.

iAppID = gvApplications.DataKeys(gvApplications.SelectedIndex).Values("iApplicationID")

However when it runs it gives me the following error:

Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

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Forms Data Controls :: Use Multiple Datakeys In Nested Gridview?

Jul 22, 2010

my page based on master and Details. there are two gridview one is header and other detail.detail gridview is inner gridview.so when i click on + symbol then details should diplay.i use dataKeys for display Inner gridview record.when i use one datakeys then it is working fine but i need two condtion for show Inner Gridview. how can use multiple datakeys here?my HTML code is below. just modify it for multiple Datakeys

[Code]....

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Forms Data Controls :: How To Clear Datakeys Of Gridview In Code Behind

Feb 15, 2010

i want to clear datakeys of gridview from code behind

here is gridview

<asp:GridView ID="gv" runat="server" DataKeyNames="row_ID" AllowSorting="True" AutoGenerateColumns="false">
</asp:GridView>

and i added columns dynamically from code behind

[Code]....

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Forms Data Controls :: Fetching Datakeys From The Child GridView?

Aug 31, 2010

I am trying to update a row of the child gridview through a link button template field but how do I fetch the datakeys of the child gridview ?

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Data Controls :: How To Get DataKeys Value Of Parent GridView On Nested GridView Button Click

May 7, 2015

URL....When the user creates a new child record (2nd gridview) how can I ibsert a field from the parent level (obviously from the line where they clicked from).

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Forms Data Controls :: Textbox Text Inside ItemTemplate In GridView Clears After The Update Button Is Clicked

Nov 10, 2010

I have a GridView with two templatefields, one with a DropDownList and the other with a TextBox, both loose their values once I hit the "update" button. Is it any way I can make the controls keep the values?

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Forms Data Controls :: GridView Paging - Paging Links Not Use JavaScript?

Nov 18, 2010

Is there a way to use the GridView paging and having the links not use JavaScript. So that when you click on the page number 5 (for example) that link is a hyperlink.

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Forms Data Controls :: How To Access Datakeys In Javascript

Aug 24, 2010

How To Access Gridview's Datakeys In Javascript...and How To make gridview Column Visible true in javascript

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Forms Data Controls :: Detailsview Clears Filled In Fields?

Aug 26, 2010

I have a details view on my page that has a template field in it. In the template field is a button that when clicked, sets the visible property of another field to true. When this happens the whole detailsview resets and anything that was entered into other fiields is cleared. Is there any way to prevent the other fields from being cleared when the hidden field is set to be shown.

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Forms Data Controls :: Datagrid Datakeys Seem Not To Work Properly

Mar 9, 2011

I have a Datagrid one of the colums is a checkbox and when it is selected I' m supposed to update that row. I have a button to update this outside the Datagrid. It seems to work well for the first two rows but after that meaning starting 3 to any it just doesnt update no errors but doesnt update. When I look into the id it seems to be empty.

Private Sub btnInactivateAllSelected_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnInactivateAllSelected.Click
'
'Function declarations
Dim currentMethod As String = MethodBase.GetCurrentMethod.Name
'Object declarations
'Variable declarations
Dim ruleID As Guid = Nothing
Dim oRule As PSXSTL.Digecenter.Rule = Nothing
Dim changetext As String = Nothing
'Start Try...Catch statement
_moduleName = "btnInactivateAllSelected_Click"
Try
For Each item As DataGridItem In GroupDataGrid.Items
If CType(item.FindControl("chkApprovalCheck"), CheckBox).Checked = True Then
ruleID = GroupDataGrid.DataKeys(CInt(item.ItemIndex))
oRule = New PSXSTL.Digecenter.Rule(DirectCast(Session("CustomerID"), Guid), ruleID)
If oRule.Complete Then
oRule.RuleStatus = False
oRule.ActiveDate = Now.ToString
changetext = "On " + Now + " " + Session("FirstName") + " " + Session("LastName") + " deactivated the Rule."
If Not oRule.ProofReviewed Then
changetext = changetext & " PDF not viewed"
End If
LogEditHistoryItem(changetext, ruleID)
' Call
' added 10/19/2004 by Rob MacMorran
LogBulkOrderHistory(oRule)
oRule.Update()
End If
oRule.Dispose()
End If
Next
' Server.Transfer("customer_clientrules_results.aspx")
Catch ExceptionObject As Exception
'Write the exception out to the event log.
EventLogHelper.LogException(ExceptionObject, _moduleName, "Error occurred in " & _moduleName & "/" & currentMethod & ControlChars.CrLf & ExceptionObject.StackTrace, EventLogEntryType.Error, 55555)
Finally
'Cleanup
'Object disposal
If Not oRule Is Nothing Then
oRule.Dispose()
oRule = Nothing
End If
'Variable disposal
ruleID = Nothing
changetext = Nothing
'Function variable disposal
currentMethod = Nothing
End Try
Server.Transfer("customer_clientrules_results.aspx")
End Sub

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Forms Data Controls :: DataKeyNames & DataKeys Not Working On Other Pages?

Feb 21, 2011

When the page is displayed have labels, textboxs, and dropdownlists on top part of the page then the gridview at the bottom with the page numbers at the bottom of the gridview. Create the columns and add data to the gridview programmatically with several hidden columns. Use DataKeyNames on the source page and use DataKeys in VB.Net code behind to get data from the hidden column cells of the selected row. On the
first page when a row is selected, the textboxes and dropdownlists have thecorrect information from the gridview hidden columns. When select another page from pages numbers at the bottom of the gridview and select a row from the new page, get theinformation from the hidden column from the first page andcorrect data from the columns that are displayed onnewly selected page.

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Forms Data Controls :: Adding OcnClick In DataBound Clears Repeater?

Feb 28, 2010

I have a Repeater and an update button inside the repeater

[Code]....

When I run this databound control to wire a javascript function it clears the viewstate and I don't get itemcommands. When I remove the button attributes command it works.

[Code]....

Obviously I can find a more creative way to add the javascript function, but this was the clearest way. Can anyone determine why adding an OnClientClick even in the ItemCreated would cause viewstate to fail?

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Forms Data Controls :: Paging Parent Gridview Until Nested Gridview Selection Is Made?

Jan 28, 2011

I have a parent gridview5 with child gridview 6, today i deployed it to our dev server and on that server we have alot more records, so for the nested gridviews i need to enable paging on the parent gridview5. Doing so works fine, until i make a selection within the child gridview6, once any selection is made, and i try to page the page throws an error, i have the following bound to the parent gridview5.

[Code]....

[Code]....

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Forms Data Controls :: GridView Sorting, Paging And DataBinding / When Control Causes A Postback GridView Is No Longer Sorted?

Jan 10, 2011

I'm trying to extend the GridView control to enable sorting and paging for any situation.

When using my control I am fetching data from a database and filling a DataSet with it, then binding the GridView upon every page load. My first question would be, is this the correct approach?

To sort the GridView I am overriding the OnSorting method which stores the sort expression and direction in the ViewState, then creates a DataView and utalises the Sort method to sort the underlying data. It then sets the Data Source to this DataView and rebinds the GridView.

Paging is handled by OnPageIndexChanging which simply sets the PageIndex property and again rebinds the GridView.

My problem is; when any control causes a postback my GridView is no longer sorted, presumably because it is persistently rebound. If I don't rebind it then the GridView is empty on postback since the data isn't automatically stored in the ViewState. I have considered saving the data source in the ViewState but I would assume that this is bad practice for large amounts of data? - also DataViews are not seralisable.

The only solution I can think of currently is to override OnDataBound and sort the data every time. This results in a double sort when paging triggers a postback which seems inefficient. Code illustration of this below,

[Code]....

I'm looking for the cleanest 'best practice' solution as this is a learning exercise more than anything else.

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Forms Data Controls :: How To Add Paging To GridView

Jun 23, 2010

GridView: Applying style to certain columns. I add GridView1_RowDataBound() and have the following line:At that time, my GridView did not need to use Paging. Now after I add Paging to my GridView (AllowPaging="true" and I have AutoGenerateColumns="false"), there is an exception for my

GridView1_RowDataBound() as:
ArgumentOutOfRangeException was unhandled by user code
Specified argument was out of range of valid values.
Parameter name:in

How to add Paging to my GridView while I need to have word-break to some of my text columns....

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Forms Data Controls :: How To Use Paging In Gridview

Aug 24, 2010

how to use pageing in gridview.

i have a grid there we set pageing =ture but when i click index 2 nothing diaplay my code is

protected
{
void ImageButton1_Click(object sender,
ImageClickEventArgs e)string date =
"select srl_no,pmw_timestamp from t_tube_auto_inter where to_char(to_date( PMW_MALFUNCTION_START_DATE,'dd-mm-yyyy'),'yyyymmdd') between to_char(to_date( '" + TextBox1.Text.ToString()
+ "','dd-mm-yyyy'),'yyyymmdd') and to_char(to_date( '" + TextBox2.Text.ToString() +
"','dd-mm-yyyy'),'yyyymmdd')";//ORDER BY PMW_MALFUNCTION_START_DATE " + TextBox1.Text.ToString();
//between '" + TextBox1.Text.ToString() + "' and '" + TextBox2.Text.ToString() + "'";
dt =
{
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
{
GridView1.PageIndex = e.NewPageIndex;
DataTable dt =
new
DataTable();DataAccessLayer.FillData(date, contest);if(dt.Rows.Count>0)protected
void GridView1_PageIndexChanging(object sender,
GridViewPageEventArgs e)//GridView1.DataBind();
}

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Forms Data Controls :: How To Get Only Certain Rows From The GridView While Paging

Jan 13, 2011

I have a GridView with edit/delete column, label column and DropDownList column. I have a textbox outside the GridView and I want to choose only those rows from the GridView which have for the second column the same value as the value of the textbox while paging.

I wrote code, but I got 0 rows as a result, which is not true.

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Forms Data Controls :: Gridview Paging Not Going To Next Page?

Jan 4, 2011

I have a Gridview all setup and even though I have the paging working it takes select the page twice in order to switch the page. Basically my code is as follows:

[Code]....

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Forms Data Controls :: Gridview Paging Not Working...

Mar 27, 2011

i have problem with gridview, gridview paging not working.. i feel so confused about it. coz i think i already using the right code.

this is my code :

detail.aspx

[Code]....

[Code]....

[Code]....

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Forms Data Controls :: Paging Not Working For Gridview

Jan 28, 2011

I have 3 gridview in my homepage..each one dealing with many rows.

I'm allowing paging in all 3 but its now working

Here's one of the codes:

[code]....

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Forms Data Controls :: Gridview Paging And Caching?

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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Forms Data Controls :: To Get Paging Buttons Into Gridview ?

Dec 27, 2010

We have a page the we have to write where users are shown 'pages' of data from our database they then select the row they want and we take them into another part of the application where they can work with the data.

When we use the built in paging (in the gridview) it is just too slow, as there is too much data.

We have written paging into our stored procedure that gets the data to work around this. The stored procedure works just fine and it is quite fast.

How can I get 'paging' buttons into my gridview when I am not using the built in gridview paging?I can keep it simple if I have to (next and previous only) but it would be better to have a 'first', 'previous', 'next', 'last' type buttons.

I cannot seem to figure out how to get these buttons into the gridview however.

some sample code (preferably vb) that would show this? (or something similar)

Built in paging is not an option.

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Forms Data Controls :: GridView Custom Paging?

Jan 26, 2011

As a part of requirement, I need to bind a table data to the Gridview, but the data content in the table is too large. I need not want to bring in all the data into the dataset, rather I need to bring only the rows that are needed to be displayed(Eg, if the page size is 10, i need only 10 records to be filled in dataset

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