I have extended GridView in order to have consistent look & feel, paging and sorting. However, when the page is first time loaded, the select method is getting called twice. It works fine when i move between pages in pagination.
Note, i am using Asp.net 2.0.
I have a GridView and a FormView on the same page. They both have separate DataSources. This is a simple Master Details configuration, when a someone clicks on the Select link in the GridView, the FormView brings up the Details data. But for some reason the FormView's DataSource is trying to retrieve data when I load the page. This is causing an error because no ID is passed from the GridView.
View 16 RepliesWhen my page is first loaded i receive error message stating to the effect
cant find Email for GetInvoicesByVendor.
this refers to a function in another class file:
Public Shared Function GetInvoicesByVendor(ByVal Email As String, ByVal vendorid As Integer) _
As IEnumerable
yet i only want to execute this function during the button click event and not when page is first loaded with the following parameters:
vendorid.Text = 1
txtcustomerid.Text = test@yahoo.co.uk
My objectdatasource is declared as follows:
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
OldValuesParameterFormatString="original_{0}"
SelectMethod="GetInvoicesByVendor" TypeName="InvoiceDB">
<SelectParameters>
<asp:ControlParameter ControlID="txtcustomerid" Name="Email"
PropertyName="Text" Type="String" />
<asp:ControlParameter ControlID="vendorid" Name="vendorid" PropertyName="Text"
Type="Int32" />
</SelectParameters>
</asp:ObjectDataSource>
I have a gridview with all columns read only except one. I want to configure the update method for the object data source to update only one column. The code i have written works when i make all columns editable but fails when i try to make only one column editable.
View 1 Repliesi wanted to retrieve things from the data base and perform mathmatical operations on it then post it to the user, so i was told to use the bullited list and bind it to the object dataSource
how to perform such thing??
I populate a DetailsView from an ObjectDataSource that is coded in a class - meaning that the ods Select, Update, Insert and Delete are class methods. The selected record is set to come from a GridView.SelectedValue.
My problem is that when the page loads the code crashes. I am pretty sure I know why: the DetailsView is pulling from a class object and instead of using the existing class object it instansiates a new one which is empty.
Here is the details view code:
[Code]....
Here is the odsDetailsView_1:
[Code]....
As you can see from the code the odsDetailsView gets it's information from a class object "Match". The detailsview is not controlled by any code behind.
I have the web page that meet the problem. There exists a gridview and filtering. When Select all by using function A, it is OK. when Filter by using function B, it cannot filter and return no rows. When Select all again, it is OK. I have tested that function B can return the corrected filtered rows. But when databind in the web page, it cannot show and no error?
<ContentTemplate>
<asp:GridView ID="gvwBOM" runat="server" DataKeyNames="ProductID"
AutoGenerateColumns="False" DataSourceID="objBOM" AllowPaging="True"
AllowSorting="True" BorderWidth="0px" CellPadding="3" CellSpacing="1" CssClass="grid-view"
OnRowCreated="gvwBOM_RowCreated"
OnRowCommand="gvwBOM_RowCommand"
OnDataBound="gvwBOM_DataBound" >
.........
<asp:ObjectDataSource ID="objBOM" runat="server"
SelectMethod="GetALTBOMs"
SelectCountMethod="GetALTBOMsCount"
EnablePaging="true"
SortParameterName="SortExpression"
TypeName="QI.BLL.WMS.ALTBOM" >
private void FillGridView(string filter)
{
if(filter == "0")
{
objDataSourceSelect="Afunction";
this.objBOM.SelectParameters.Clear();
}
else
{
objDataSourceSelect="Bfunction";
this.objBOM.SelectParameters.Clear();
this.objBOM.SelectParameters.Add("productSupplimentID", ddlTmp.SelectedValue);
}
this.objBOM.SelectMethod = objDataSourceSelect;
this.objBOM.SelectCountMethod = objDataSourceSelect + "Count";
this.gvwBOM.DataBind();
}
i made a small n-tier webapplication, a DATA project with my business objects a DA project with my datacces logic and a GUI project woth my website. For the CRUD operations on my main tables I use a lot of listviews, that works fine but when data grows its slows down.I used already used optimal paging & shared collection's to preventing database acces if data is already loaded en that helps alot.But I see when a user select the EDIT command the select of my listview is performed what is not needed, also when the user than select cancel the select is again called , is this normal behavior or do I made a mistake in program logic somewhere because this behavior is slowing my application down.
View 1 RepliesI am having dataset and I want to validate particular column for Integer(Numeric) value.
e.g.
ErrorRows = dt.Select("LEN(Year) <> 4 ")
Above I have to validate Year column for Numeric value otherwise it should give me erroneous records which have data other than numeric.
This is my query
EXEC sp_configure 'show advanced options', 1
RECONFIGURE
GO
EXEC sp_configure 'ad hoc distributed queries', 1
RECONFIGURE
GO
insert into OPENROWSET( 'Microsoft.Jet.OLEDB.4.0', 'Excel 8.0;
Database=D:TestDBFirst.xls;;HDR=YES',
'SELECT * FROM [Sheet1$]')
select * from MasterData
And this error comes
OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)" returned message "Unspecified error".Msg 7303, Level 16, State 1, Line 1 Cannot initialize the data source object of OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)".
I have a dropdownlist attached to a cell when edit is selected. I am using the following code to populate the drop down list with the value that is on the row.
dlBU.Items.FindByValue((e.Row.FindControl("lblBU") as Label).Text).Selected = true;
This works famously when I have a value in the cell. It fails when the cell has not yet been populated. Is there an if then clause that if the value of e.Row.findcontrol("lblBU") is null no default value?
I am using VS 2008 SP1. My also have included CSS Friendly adapter [URL] in my project ( I mentioned this because my GridView Empty data template is not showing when using GridView's CCS Friendly adapter). I have a GridView and a DetailsView. When a record in GridView is selected its details information is shown in the Details View. Type of Data source I am using is ObjectDataSource. My Insert and Update methods works perfectly. It is only the Delete method that is passing null values to the underlying object delete method. My source codes for both the UI, BLL, DAL is shown below
[Code]....
My Business Object code is below :
[Code]....
My Data Access Layer Code is:
[Code]....
I am developing on application in that i have taken one list box and getting data to it using an object source.up to this stage it is fine.I need to compare these value what i get into list box and need to represent data in to a report viewer ..how to get these values from objectsource.i m new to c# i placing the code.
[Code]....
I have an object data source that is being used by an rdlc report, and the object data source uses a filter that is built from session variables passed to the page.
The report displays correctly, with the filter applied; however, I want to mark each of the rows as "printed" in a bit field in the database table.
In the table adapter, I have the following Update command that is used by the object data source:
UPDATE dbo.WorkOrder
SET boolWorkOrderPrinted = 'True'
WHERE (WorkOrderID = @Original_WorkOrderID)
And in the Page Load event, I run:
ObjectDataSource1.Update();
However, no records are updated.
Traditionally with an Object Data Source, the wired up class will have its public properties available for binding (i.e. Gridview columns, etc.) which works well. But what if one of my wired up business objects has a property that is an object itself; can I drill down to a property on that object property and still use it?
So in additiona to the traditional:MyBusniessObject.OrderID...I want to use:MyBusniessObject.Customer.NameID
Your 1st response might be to just wire up the 'Customer' class, but I need properties both on 'MyBusinessObject'and 'Customer'. I do not think this can be done, as the ODS will not display properties on an object instance property. I have tried manually typing in the drilled down value as well, but that wasn't a success either.
i am facing a strange problem putting it in short .... i have two grids... i have grid1 and grid2... now based on row click of firstgrid..i wd take d id from cell(0) of first grid and then fill up the 2nd grid based on tht info selected (id) from the 1st
grid .... here is the code snippet :
[Code]....
and here is the codebehind :
[Code]....
now the problem is that : when i click the row for first time it shows into the 2nd grid all fine ...
but whenever i reclick it ..it shows the page with error in javascript that object refrence needed... and page ends with error. why i cant reclick my grid to fill up the data and why is it ending up in javascript error.....
I have a dropdownlist (drpClients) bound to an object datasource (odsProgramClients). In the dropdown's databound event, I load a dynamic table based on the selected item in the dropdownlist. This all works well. However, if I force a problem in odsProgramClients select method, it continues to the databound event of the dropdown and attempts to load the table, even though dropdownlists underlying select method failed. I wish to stop the databound event from firing if there is a problem in the select method. I have code that traps the error in odsProgramClients select method.
[Code]....
[Code]....
How do I stop the dropdownlist from databinding, if there is an error in it's underlying datasource?
i have a SortedList.The value of which is a Cart Object that stores a Product object consisting of properties.
i wish to set the datasource to the Product object.
so how can i refer to the Product object?
I want to call a method in the code behind file from the aspx file, but I can't get the TypeName propery correct.
I can call methods in the dll:s in the bin folder and from files in the app folder, but not from code behind in the aspx page. What do I need to do.
my query is SELECT a.HD, a.HEAD, a.SH, a.SUBHEAD, a.TRK, a.TRACK, a.TGT, a.TARGET, a.PDC, a.DT_RELEASE, a.STATUS, a.CO
FROM V_HIERARCHY1 a
my data is ,HR HR Rec Records Leave Leave Records HRL.0001 Policy and Process for leave record. 27.06.2010 30.06.2010 WIP Edlink
HR HR Rec Records Leave Leave Records HRL.0002 Quarterly Review 01.07.2010 04.07.2010 Planned Edlink
HR HR DB Database SAL Salary DDS.0001 Calculation of Monthly salary 08.08.2010 09.08.2010 WIP Edlink
HR HR Rec Records Ind Induction Records HRI.0001 Completion of dossiers. 08.07.2010 10.07.2010 WIP Edlink
HR HR DB Database Emp Employee HDE.0001 Offer letter 06.07.2010 09.07.2010 WIP Edlink
my outout is ,HR
REC
LEAVE
HR1
REC1
LEAVE1
I was looking at the options in Intellisense for the properties used with a parameter for the Object Data Source. There is one that I don't understand how it would be used. explain, or recommend an article, about the DB Type is for and how it would be used?
View 2 RepliesI've posted the same question in the Object Data Source forum. This is a link to it http://forums.asp.net/t/1554083.aspx. Maybe I should've posted here to begin with. There seemed to be some overlap so I wasn't sure which was the best on to post the question in.
I'm trying to get a better understanding of how I could've designed my app so that the Object Data Source could work with the properties of my business objects. Please read the other post to see how it's currently being done. Sorry for the link to the other page. I didn't want to post a bunch of duplicate information. I would love to get some suggestions for alternative ways of doing this.
I have an insert that uses an object data source with out the direction property set and it works fine. I noticed the direction property though and wondered if I should use it.Should the direction property for the parameters of an object data source be used with a simple CRUD operations?
View 3 RepliesI'm trying to understand when to use the type property and when to use the dbtype property. I looked online but couldn't find a good article that said when and why.
View 3 RepliesI created a class library: PRTreatmentReviews. I created a reference for the class library on the website. I checked the property pages and the reference to the class is there. I put objectdatasource on a page and tried to pick up the PRTreatmentReviews class but it's not there? The Class
[Code]....