VS 2008 - Gridview With ObjectDataSource Row Updating
Jul 5, 2011
Which is the correct event to handle Updating of a row in my gridview. The gridview is bound to an objectdatasource. I added a tamplate field like this to handle editing a row:
Code:
<asp:TemplateField ShowHeader="false">
<ItemTemplate>
<asp:LinkButton ID="lbEdit" runat="server" CausesValidation="False" CommandName="Edit" Text="Edit"> </asp:LinkButton>
</ItemTemplate>
[Code] ....
No I need to handle the Update Button click.I need to set the ObjectDatasources Update params and call the update method. I'm not sure which is the correct event to do this. IS it gridview_RowUpdating??
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Similar Messages:
Dec 17, 2010
I have a gridview with the ObjectDataSource and the Update does not work. When I click on Edit, I go to Edit mode but Update will not work at all. No errors. I do believe that it is in the RowUpdating method but cannot figure out how to call the method UpdateBook from the BookManager BAL.
BAL BookManager
[Code]....
Gridview
[Code]....
RowUpdating
[Code]....
Put in Breakpoints and it is getting to the RowUpdating but will not update.
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Jan 20, 2011
i have been following the asp.net data access tutorials on this site. When i try to update, nothing happens. I believe the problem lies with my wrong coding on the BLL part. I'm using table adapters. Could anyone point out what iswrong with my code or tell my what the correct code is?
[Code]....
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Mar 13, 2010
I'm facing the following issue:
I have a gridview that allows updating. I only want to show the relevant fields to the user. As a result I hide the ID field of the records. But I need this value as a parameter for my update command. Apparently the value is always passed as 0 when the field is set invisible. When the field is set visible, the right value is passed.
I know it is possible to refer to a selected row and its controls, to get their values, even for invisible fields. This is what I want to do when the row is updating, in order to get the ID value of the label control which holds the ID value. How do I refer to the row that is updating? I experienced that the row is not considered 'selected', so the SelectedRow property of the gridview does not do the trick.
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Jul 19, 2010
i m having sub-grid/Nested Grid concept using grid view control ., i.e., inside grid in sixth cell i m having another grid.,
i n Sub-Grid i m having The Follwing Events
OnRowDataBound="Gdclmline1_RowDataBound" OnRowEditing="Gdclmline1_RowEditing"
OnSelectedIndexChanging="Gdclmline1_SelectedIndexChanging" OnRowUpdating="Gdclmline1_RowUpdating" ., all the events are working Fine Except OnRowUpdating="Gdclmline1_RowUpdating" this event.,
we are developing the software in Visual Studio 2008 ., our Server is Visual Studio 2010 .,
in my development machine its working fine., but in Server machine its row updating event not working .,
note:- we have used proper conversion method from vs 2008 to vs 2010
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Aug 9, 2010
I have the following situation:My business class:
public class Foo
{
public String A {get;set;}
public DateTime B {get;set;}
// .. and other properties like
public String Intern {get;set;}
}
I'm binding that Item to a DetailsView in Editmode. (I bind a List containing a single object of Foo, becuase I do recall that I can only bind IEnumerable<> classes to the DetailView)The binding is done via a ObjectDataSource
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Jan 4, 2011
I am very new to updating the datasource using ObjectDatasource. I have a checkbox on click of update the update method triggers but though teh check box is checked, the value is updated as false.
<asp:TemplateField HeaderText="IsPrimary" SortExpression="IsPrimary">
<EditItemTemplate>
<asp:CheckBox runat="server" ID="chkIsPrimary" Checked='<%# Eval("IsPrimary") %>' />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Remarks">
<EditItemTemplate>
<asp:TextBox ID="txtRemarks" runat="server" SkinID="longTextBox" TextMode="multiLine"
Text='<%# Bind("Remarks") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>......................
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Jan 28, 2010
I'm doing research on framework development for my company. SInce I will be developing a framework I can not simply declaire all my control in the code in front. Receiently I've been having trouble binding the controls from my ListView to my ObjectData Source. Basicly the properties in my DataObjectTypeName are not populated when the ObjectDataSource "Update" command is thrown. I recieve no error, I just get null values. All I need is an equivalent to this statement for code-behind ...
<%# Bind("AbstractText") %>This would solve all my issues. Ofcouse I will most likely need to bind the control's ID somewhere but that is not an issue. How do I Bind a control to a property in my DataObjectTypeName from the code-behind?
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Oct 14, 2010
I'm using following DropDownList event to select an employee from MS SQL Server 2005 and showing the employee's information on TextBox.
protected void employeeDropDownList_SelectedIndexChanged(object sender,
EventArgs e)
{
EmployeeDAL employeeDAL = new EmployeeDAL();
DataTable dataTable = employeeDAL.GetEmployeeData();
for (int i = 1; i <= dataTable.Rows.Count; i++)......
But the problem is... values of the TextBoxes are not changing. I mean TextBoxes are keeping previous values those were assigned in employeeDropDownList_SelectedIndexChanged event. But why?
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Feb 12, 2010
why this update is failing? The table is connected to OK and there are appropriate values in the parameters to the subroutine, and yet the record in the table remains unchanged. I am using exactly the same code (with different parameters, obviously) to update another table and this continues to work fine.
Public Shared Sub SaveMathsSettingOptions(ByVal ID As Integer, ByVal Auto As String, ByVal Repeats As Integer, ByVal Weekly As String, ByVal ClassSheets As Integer, ByVal HomeSheets As Integer)
Dim con As New MySqlConnection(_connectionString)
Dim ret As String
Dim sql As String
sql = "UPDATE centres SET maths_auto = @maths_auto, maths_auto_reps = @maths_auto_reps, maths_weekly = @maths_weekly, maths_class_sheets = @maths_class_sheets, maths_home_sheets = @maths_home_sheets WHERE centreID = @centreID"
Dim cmd As New MySqlCommand(sql, con)
cmd.Parameters.AddWithValue("@maths_auto", Auto)
cmd.Parameters.AddWithValue("@maths_auto_reps", Repeats)
cmd.Parameters.AddWithValue("@maths_weekly", Weekly)
cmd.Parameters.AddWithValue("@maths_class_sheets", ClassSheets)
cmd.Parameters.AddWithValue("@maths_home_sheets", HomeSheets)
cmd.Parameters.AddWithValue("@centreID", ID)
Try
con.Open()
Catch myerror As MySqlException
'MessageBox.Show("Error Connecting to Database: " & myerror.Message)
ret = myerror.Message
con.Close()
Finally
con.Dispose()
End Try
End Sub
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Oct 4, 2010
I have an excel sheet with 2 tabs and has data in those 2 sheets(sheet1, sheet2) which correspond to different tables in the same database. This excel sheet gets updated daily, I am wiriting a console app( which will later be a batch build). I have to insert the data from the excel sheet to corresponding tables (table1, table2,table3) in database when i run it and and also if the table has the same data already present it should ignore and if there are any modifications done the data it should update the table. I know we can do this using ado.net or LINQ, I am a little new to database based programming .
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Aug 2, 2010
table a
a1 a
1 qw
2 asa
i have two grid views
gridview1 has check box[a1] and one value[a](in total two columns) with objectdatasource1 for datareferencing from database
another gridview2 has to select only the selected/checked value of gridview1 of checkbox1
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Feb 9, 2011
I'm facing a wierd problem with GridView and ObjectDataSource. I bind GridView to my business objects via ObjectDataSource. Everything was working fine until I decided to add a new field in my buisness object and wanted to add a column to GridView to show it. Somehow that column is NOT shown in the GridView's list of available columns. I have tried refreshing schema, rebinding, etc. I'm using GridView inside a user control which is used as a web part. Does that make a difference ?
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Oct 11, 2010
I have a grid view that bounded to an object data source that select data from type of student
public class student
{
int id;
[code]...
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Feb 2, 2011
how I do a sorting in a gridView with data bound by a ObjectDataSource?
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Apr 22, 2010
[code]....
Select method returns array of strings . But How I need to appear selected node for edit delete methods get this string (userName) ?
for methods like :
[DataObjectMethod(DataObjectMethodType.Delete, true)]
static public DeleteMember(...
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Feb 4, 2010
I have a GridView, I bind it to ObjectDataSource. ObjectDataSource takes data from a database's table. Each row in table has unique ID.
I have a button in each row of GridView that should remove this row from database. My ObjectDataSource returns Object, this returned object contains ID (and some other information, like name, user etc.) however I do not show this ID on my grid.
how can I get these ID after user chooses to delete row, I need to know what I should remove.
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Jun 7, 2010
I have a gridview being populated by an ObjectDataSource (ODS). The ODS is calling a BLL to get information from a database table. The information returned is all determined by a participantID. This works fine normally.
The issue is that I'm getting an exception thrown when the participantID isn't listed in the database table; which is possible until their information is inserted and updated on this database table. The information is entered when someone visits a webpage, their information and date/time stamp is inserted/updated to this table, but not until then.
Do I edit my ODS or the BLL to check for a null return and handle this exception? How would I do this as well?
[Code]....
[Code]....
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Sep 21, 2010
I have a grid that receives products over a GetList methods via ObjectDataSource. The Product class contains also a Object Supplier. If I change in the drop down list of the grid the supplier for a product and I click update the ID of the suppliier is still the same. I have debugged the call of the update method and checked the parameter in the product object. I wrote the following code in the SelectedIndexChanged event and the text box shows the right id but not the update method.
DropDownList supplier = (DropDownList) sender;
txtTest.Text = supplier.SelectedValue;
Here is the code of my grid view:
[Code]....
My Object Data Source calls the following Update Method:
[Code]....
The next work around idea would be to call the update method manually in the Update Event of the grid view.
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Sep 2, 2010
Backgroud: I'm using NHibernate for my model layer, and I have a HTTP module taking care of instantiating the session at the beginning of each request and cleaning it up at the end of each request (i.e. Session Per Request). In this case, I have two object types:
ParentItem - an object with a bunch of properties and a collection of ChildItems. ChildItem - an object with properties including a DateTime (EffectiveDate) and an unenforced FK pointing to a completely different database. The ChildItem class contains a reference back to the parent as well (many-to-one) While the ParentItem has multiple ChildItems in its collection, I'm only generally interested in the latest ChildItem in the collection.
Desire: Want a databound control (GridView or ListView, I don't care which) that allows me to Add/Edit/Delete ParentItems from my datasource. I also want to have the ability to set a new "latest" ChildItem as part of the edit/update.
Issue: I can't seem to access the underlying DataItem from the GridView/ListView in the OnItemUpdating handler (which isn't unexpected, since the data is now in the viewstate). What I thought I could do would be to load a ParentItem from my session using the ID from the databound control, create a new ChildItem, add it to the ParentItem, and then save the ParentItem. Since NHibernate caches the data, the load should give me a copy from cache (no roundtrip to the DB) and I'd either be doing this before the ParentItem was saved back (thus no changes committed to ParentItem, just to ChildItem) or after (thus the cached version is still the same, and my new object will match the updated version). What I get when I do this (for ParentItemID=1):
a different object with the same identifier value was already associated with the session: 1, of entity:
NameSpace.ParentItem
on the line:
Session.SaveOrUpdate(parentItemInstance);
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Mar 19, 2010
Can you post of an example of Gridview with EditItemTemplate using ObjectDataSource as data connectionand Update the the specific row. Ihave lots of sleepness night with this problem.
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Feb 9, 2010
I've been working a gridview that uses an ObjectDataSource to perform either select, insert, delete or update. I was able to get everything to work correctly with the GridView except when it came to performing an update. My first issue that I came across was that it was tacking on two extra columns or fields that I didn't really expect. The function being called (SavePipelineUser) only expected 4 parameters and was getting 6 in total. This was occuring even though I had placed OldValuesParameterFormatString="original_{0}" or OldValuesParameterFormatString="{0}" within the GridView's attributes.
Ok, So I was able to resolve this issue by going into the OnUpdating event in the ObjectDataSource and doing the following below. This effectively removes the additional parameters from being added. However, I now have a new problem. There doesn't appear to be any values actually being passed into this method. So, while no errors appear, nothing gets updated. Can anyone explain to me why my values are not being carried forward? I've spent about a day and a half working on this issue and was able to get around this by just going with the GridView's RowUpdating event and grabbing values from grid to manually get it to update. While I'm very happy for anything to be working after so much time, I still feel like this is a bad hack for this to work. I have a hard time fathoming why this seemingly simple use of the GridView on my part has turned out to be very complicated. I'm extremely leary now of using the ObjectDataSource object for anything if it's going to be this much of an effort.
<!--html code-->
<asp:GridView ID="gvPipelineUsers" runat="server" AllowPaging="True"
AllowSorting="True" DataSourceID="objCommon" AutoGenerateColumns="False" ShowFooter="True"
[code]...
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Nov 21, 2010
This is not my solution. I actually compiled it here with proper example. So I don't take any credit for the solution. In the past I have used GridView to insert recordsbut not using ObjectDataSource. Mostly I did it by catching RowCommand event of GridView and call the appropriate function. This time I was adamant using ObjectDataSource to Insert in Gridview. GridView doesn't support Insert so it does not actually instantiate OBjectDataSourceView automatically for Insert operation
So here is the soloution, catch the RowCommand event of gridview, get the ObjectDataSourceView, create orderedDictionary, add entries to ordered dictionary, call insert function of ObjectDataSourceView instead of ObjectDataSource. Here is the RowCommand event of the gridview
[Code]....
Here is the ObjectDataSource
[Code]....
Here is the business object class
[Code]....
Here is the object class
[Code]....
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Jan 27, 2010
I'm using a GridView with an ObejctDataSource. The data is provided by a business object and not a DB. It returns a list of people and each person belongs to a group. Now I need to filter data. For example, I need to return list of people in specific groups. How can I specify a list of groups to be able to filter the data ? Could I use SQL like syntax ? I understand the filter expression works only when data is returned as a datatable. But in my business object I maintain data as hashtables and return as List<PeopleInfo>. Do I need to return list as datatable instead ?
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Sep 21, 2010
I get the following error when trying to delete a row in a gridview. The error is strange, since I dont pass 2 parameters as far as I can see.This is the error and the code is below:
Server Error in '/' Application.
ObjectDataSource 'odsRooms' could not find a non-generic method 'DeleteRoom' that has parameters: id, locationid.
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.InvalidOperationException: ObjectDataSource 'odsRooms' could not find a non-generic method 'DeleteRoom' that has parameters: id, locationid.
Source Error: [Code]....
Stack Trace: [Code]....
[InvalidOperationException: ObjectDataSource 'odsRooms' could not find a non-generic method 'DeleteRoom' that has parameters: id, locationid.]
System.Web.UI.WebControls.ObjectDataSourceView.GetResolvedMethodData(Type type, String methodName, IDictionary allParameters,[code]....
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