DataSource Controls :: Benefits Of Using ObjectDataSource Over Normal Method Calls?

Jul 6, 2010

In my application at some places we have used ObjectDataSource and at other normal method calls to retrieve data.My question is then what exactly are the benefits of using ObjectDataSource ?In the example below "CODE ONE" makes a call to the Business Layer and then Binds the results to the Grid abd "CODE TWO" is using ObjectDataSource to do the same.Then how is ObjectDataSource better?

SuitableApplicant sa = new SuitableApplicant();
IList<HD.Recruitment.SuitableApplicant> list = new List<HD.Recruitment.SuitableApplicant>();
list = HS.Recruitment.RecruitmentService.GetSuitableAppls();
GridView1.DataSource = list;
[code]....

View 5 Replies


Similar Messages:

ObjectDataSource Calls Update Method With Old Values?

Jun 20, 2010

i have an instance of ObjectDataSource with specified update method. But on update i have an old values(previously set in gridview) in method - they are not updating.

<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" DeleteMethod="DeletePayment"
InsertMethod="InsertPayment" SelectMethod="GetPayments" TypeName="CostsReportControl.Models.Payments"
UpdateMethod="UpdatePayment" OldValuesParameterFormatString="{0}_old">
<SelectParameters>
<asp:Parameter Direction="input" Type="string" Name="sortExpression" />
<asp:Parameter Direction="input" Type="string" Name="sortDirection" />
</SelectParameters>
<DeleteParameters>
<asp:Parameter Name="id" Type="Int32" />
</DeleteParameters>
</asp:ObjectDataSource>
<asp:ObjectDataSource ID="ObjectDataSource2" runat="server"
SelectMethod="GetList" TypeName="CostsReportControl.Models.PaymentTypes">
</asp:ObjectDataSource>

my update method

public void UpdatePayment(int Id,string Fullname,DateTime Date, string Sum, string PaymentType, string RecordInfo,int Id_old)

View 2 Replies

DataSource Controls :: ObjectDataSource - Update Method To Pass Entity To The Method In BLL Class?

Oct 18, 2010

I have an ObjectDataSource that I want to perform updates using a business entity i.e. Type="Object"). Since the values for the entity are within a user control, I have stored a reference to the control in Session and in the updating event, set the new instance to the value of the entity from the user contol property (which also pulls values from the form viaother properties of the control):

Protected Sub MasterDataSource_Updating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.ObjectDataSourceMethodEventArgs) Handles MasterDataSource.Updating
Dim entity As New Login()
Dim accountControl As AccountInfo = TryCast(Session("AccountCtrl"), AccountInfo)
entity = accountControl.Entity
e.InputParameters.Add("entity", entity)
End Sub

And here's the markup for the datasource:

<asp:ObjectDataSource ID="MasterDataSource" runat="server" EnableCaching="true" CacheDuration="10"
SelectMethod="SelectAll" UpdateMethod="Update" TypeName="Data.DAL.LoginDAL">
</asp:ObjectDataSource>

My question is, how can I get the update method to pass this entity to the update method in my BLL class? It seems the Update method requires an ID or reference to the original object to use in determining whether any changes have taken place, but I don't really want to do this. In other words, I just want to use the Update event on my ObjectDataSource to pass my entity to the method ("Update") I set as a property and then let this business method handle the update of the data. Shown below, is the BLL update method I want to call:

Public Overloads Function Update(ByVal entity As Login)
If entity Is Nothing Then
Throw New ArgumentNullException("entity")
End If
MyBase.Update("UpdateLogin", entity.Username, entity.Password, entity.FirstName, entity.LastName, entity.Role, entity.Region, _
entity.Email, entity.Title, entity.TierID, entity.Street, entity.City, entity.State, entity.Zip, entity.Mobile, entity.Phone, entity.Fax)
End Function

When I try to call this as it stands now, I get an error: ObjectDataSource 'MasterDataSource' could not find a non-generic method 'Update' that has parameters: ID, entity. Previously, I'd set up a long list of parameters of basic data types (string, int, boolean), but this is rather cumbersome and I was hoping to use an entity for this (FYI, I also got the same type of error when I tried this approach, but with the ID as the
last parameter in the list). Perhaps what I'm doing here is atypical to how the ODS is normally used?? Has anyone done something like this successfully?

View 1 Replies

DataSource Controls :: BLL Add Method & ObjectDataSource?

Jan 4, 2011

My Business Logic Layer has AddItem method that add's to Items table in db along with an entry in Balance table.AddItem method uses two TableAdapters Items & Balance. Both these have corresponding Business Objects as Item and Balance.

Here is the AddItem method :

[Code]....

ASPX Page with DetailsView & ObjectDataSource

[Code]....

Now executing this page generates error as

ObjectDataSource 'ObjectDataSource2' could not find a non-generic method 'AddItem' that has parameters: _item, _balance, ItemName, GroupId, CategoryId, AuId, Rate, TotalStrScale, OffsStrScale, OffsAE [code]...

View 1 Replies

DataSource Controls :: How Use The Select Method To Get The Rowcount With Objectdatasource

Mar 22, 2010

i have this class

class MyDal
{
IList<MyData> GetAll(string orderBy, , int count, int firstIndex, out int totalRowCount);
}

i'm using an objectdatasource with MyDal to bind values to a gridview.

i want know if there's a way to configure the objectdatasource to use the parameter totalRowCount without calling the SelectCountMethod.

View 3 Replies

DataSource Controls :: Custom Insert Method In ObjectDataSource?

Jan 19, 2010

I've an ObjectDataSource & its datasource from typed dataset which is bind to 3 textboxes.

One of that textbox text concatenate with other two textboxes values.

Some thing like this,

textbox1.text=textbox2.text & textbox3.text

How can I customize my insert query for this?

I could not see the insert query in my objectdatasource.

View 4 Replies

DataSource Controls :: Update Method In ObjectDataSource Is Not Working?

Mar 9, 2010

Here is the "Update" method which is not updating.

It works if I remove "@original_UnitPrice" and "@original_OnHand" parameters from the "WHERE" clause.

[Code]....

View 2 Replies

DataSource Controls :: Getting Returnvalue From Objectdatasource Delete Method?

Jul 13, 2010

How and where can I get the returnvalue from my "DeleteGuestById" method to show the right error message to my user?

I have this:

Protected Sub gvGuestlist_OnRowCommand(ByVal sender As Object, ByVal e As GridViewCommandEventArgs) Handles gvGuestlist.RowCommand
If e.CommandName = "DeleteGuest" Then
Dim index As Integer = Convert.ToInt32(e.CommandArgument)
Dim data As DataKey = gvGuestlist.DataKeys(index)
Dim GuestId As Integer = data.Values("id")
odsGuestlist.DeleteParameters.Clear()
odsGuestlist.DeleteParameters.Add("id", GuestId)
odsGuestlist.Delete()
End If
End Sub

In my BLL:

<System.ComponentModel.DataObjectMethodAttribute(System.ComponentModel.DataObjectMethodType.Update, False)> Public Function DeleteGuestById(ByVal ID As Integer) As Integer
Dim returnval As Integer
GuestlistAdapter.DeleteGuestById(ID, returnval)
Return returnval
End Function

I think I have to be in the ObjectDatasources' "OnDeleted" method but I have no what code to place there.

View 2 Replies

DataSource Controls :: ObjectDataSource Could Not Find A Non - Generic Method Update?

Mar 11, 2010

error "ObjectDataSource 'ObjectDataSourceCaseDetails' could not find a non-generic method". I have an update method and my ObjectDataSource is hooked up to the method in my BLL. review my code below

[Code]....

[Code]....

View 1 Replies

DataSource Controls :: Objectdatasource With A Generic Select Method - How To Pass The Type

Mar 14, 2011

[Code]....

[Code]....

The GetList method is as folllowing:

[Code]....

Now i can populate my gridview trough code by this: //gvwDiensten.DataSource = new BindingList<diensten>(dataManager.GetList<diensten>().ToList());But i would like to use an objectdatasource, so i created this:

[Code]....

</asp:ObjectDataSource>

But when running the page i get:

ObjectDataSource 'dsDiensten' could not find a non-generic method 'GetList' that has no parameters.

View 5 Replies

DataSource Controls :: ObjectDataSource 'odsDetail' Could Not Find A Non-generic Method 'Update'...

Jan 26, 2011

I try to update the detailview control. got this error messsage.

ObjectDataSource 'odsDetail' could not find a non-generic method 'Update' that has parameters: hospitalID, hospitalName, taxID, address1, address2, city, state, zip.

[Code]....

here's my edit function

[Code]....

View 3 Replies

DataSource Controls :: Use An ObjectDataSource Update Method With A Table - Valued Parameter?

Oct 13, 2010

I'm trying to figure out if it's possible to use an ObjectDataSource Update method with a table-valued parameter. Here's my ODS:

<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
DataObjectTypeName="TestProject.MyTestDataTable"
SelectMethod="GetTestData" TypeName="TestProject.BLL.TestBLL"
OldValuesParameterFormatString="original_{0}"
UpdateMethod="UpdateTestData">
<SelectParameters>
<asp:Parameter DefaultValue="65" Name="testId" Type="Int32" />
</SelectParameters>
</asp:ObjectDataSource>

I bind this to a GridView but I'm not looking to edit row by row. Instead my GridView has a bunch of TemplateFields with textboxes. I also have a Button that when pressed, invokes the Update method of the ODS. So then the "UpdateTestData" function in my TestBLL is called. This looks like this:

public void UpdateTestData(MyTestDataTable dt)
{
QueriesTableAdapter qta = new QueriesTableAdapter();
qta.UpdateTestData(dt);
}

At run-time in debug, it seems like the object for the signature above is not populated with the data from my GridView.

View 1 Replies

DataSource Controls :: Benefits Of Timestamp - Why Use It

Jan 16, 2010

I would like to know what does a field timestamp in MSSQL do?I have read a book "ASP_NET_3_5_Social_Networking" and almost all the tabels have a columnt with type "timestamp" in their example app.What is the benefit of timestamp , and why should i use it?

View 5 Replies

DataSource Controls :: Benefits Of Using SqlCommand.ExecuteNonQuery Instead Of

Mar 29, 2010

[Code]....

is used for update, insert and delete operations.Besides the fact

View 3 Replies

DataSource Controls :: Change Data Capture Benefits?

May 5, 2010

I want to know about Change Data Capture(CDC) benefits in SQl Server?Especially on Data Base Volume?

View 1 Replies

Calls To Successive Calls On Repeater With XML Datasource Is Not Binding New Data?

Feb 17, 2010

I have the following Page_Load function...

protected void Page_Load(object sender, EventArgs e)
{
XmlDataSource1.Data = GetXmlFromFile(Request.QueryString["file"]);
XmlDataSource1.DataBind();
Repeater1.DataBind();
}

The page in which this Page_Load resides is called by a parent page. Each time this Page_Load gets called the value of "file" in the query string will be different. So each time I will be receiving the XML contents from a different file which are inserted into the XmlDataSource and then bound against by the Repeater. Getting the XML data from the file works great but when I bind against the repeater that only works the first time through Page_Load. Each time after that when this code is executed the same results from the first XML file are displayed in the repeater.

What am I missing here. How can I get the XML data to be bound against the repeater on each page load instead of just the first one?

View 3 Replies

Forms Data Controls :: DetailsView Delete Method Passing Null Values To Objectdatasource Underlying Object Delete Method

Apr 12, 2010

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]....

View 2 Replies

Forms Data Controls :: How To Get Value To The Objectdatasource From Datalist Itembound Method

Dec 21, 2010

how to get value to the objectdatasource from datalist itembound method

protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e)

View 4 Replies

DataSource Controls :: Finding A Query Which Converts Base64 To Normal String

May 28, 2010

I need a query which converts base64 to normal string . I am storing my value as base64 in the DB . How can I convert it to normal text from query

View 7 Replies

Forms Data Controls :: DetailsView's ObjectDataSource Update Method Fails?

Jan 15, 2011

I am using a gridview to select a record and control that record using a details view. I am using a class based objectdatasource to link the data for select, update and delete. Sofar the select works but the update fails. Here is my error message:

ObjectDataSource 'odsDetailsView_1' could not find a non-generic method 'UpdateSet' that has parameters: setId, TYPE, iHPlayer, iAPlayer, iHRuns, iARuns, iH8Break, iA8Break, iHe8s8, iAe8s8, iH15BRn, iA15BRn, iHWins, iAWins, SET_ID, MATCH_FK, HOME_MEMBER_ID_FK, AWAY_MEMBER_ID_FK, HOME_TABLERUN, AWAY_TABLERUN, HOME_8BALLBREAK, AWAY_8BALLBREAK, HOME_E8S8, AWAY_E8S8, HOME_15BRN, AWAY_15BRN, HOME_TOTALWON, AWAY_TOTALWON, HOME_POINTS, AWAY_POINTS, LOCKED, GROUP_FK.

The first group of parameters have lower case letters and they come from my objectdatasources update method parameters. The second group of parameters are all capitalized and they are the fields in my SQL database table (and I don't know how they wound up in the error). This might be a clue.When executing the code my class method never gets the chance to execute because the error pops up before the code gets there.

Here is my objectdatasource:

[Code]....

Here is my detailsview:

[Code]....

Here is my class update method constructor:

[Code]....

View 1 Replies

Forms Data Controls :: Updating Checkbox Value Through ObjectDataSource Update Method

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>......................

View 2 Replies

DataSource Controls :: Timeout On Simple Calls?

Feb 8, 2010

I am creating a simple function that loops through a database, grabs all the tables and (for now) just spits out the first column name. The query I am using is very quick and simple and takes about 1 second to excecute in SQL, I have double and tripple checked this time. However, when my app makes the call, I keep getting a timeout error on about 25% of my calls, none of them should take over 2 seconds...let alone the entire timeout period, and I have no idea why.The section of code that errors out is inside the loop through all the table names (sqldr is the datareader and "name" will get me the name of the table)

[code]...

View 1 Replies

AJAX :: Asynchronous Calls To Same Method?

Mar 12, 2010

I am relatively new to asp.net. In My asp.net website, i have a method GetData(int id) which is called Repetitively, depending on id count, GetData is desinged to get data from sharepoint and sql server both. if the Id count is high say =10, my page load time increases because GetData is called 10 times and the page load time keeps adding up. so I want to ask, is there any way that this GetData() be called asynchornously or by the use of some thread, so that my page loads faster.

View 2 Replies

DataSource Controls :: ObjectDatasource And Class As Datasource

Jun 24, 2010

I am really having a hard time trying to write something from scratch I created a 'Person' Class.Public Class Person

Private _FirstName As String = ""
Private _LastName As String = ""
Private _Age As Integer = 0
Public Sub New(ByVal FirstName As String, ByVal LastName As String, ByVal Age As Integer)
FirstName = FirstName
_LastName = LastName
_Age = Age
[code]...

View 1 Replies

MVC :: Renderaction Calls Wrong Action Method?

Nov 19, 2010

I'm struggling with renderaction, the problem is that it calls the wrong action method on my controller.On my "Users" controller there are two action methods called edit, one for get and one for post requests:

public virtual ActionResult Edit(int id)
{
//return a view for editing the user

[code]...

View 3 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved