Capture Data Before A Postback (User Control Within A Repeater)

May 9, 2012

I have several UserControls in an ASP:Repeater. They are 'Add to basket' User Controls with a text input for quantity and a button to add the item to the basket.

My problem is the value is being reset to 1 whenever I enter a value into the quantity text box. I think this is happening because the containing page reinitialised the repeater (which holds the UserControls) and the quantity is one again before the UserControl's click event is fired.

how to capture the value in the textbox before the Postback occurs, I am happy to stick this data in a session for now.

I am thinking I need something along the lines of PreLoad? But that didn't work for me

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.net - Repeater Control Causing Invalid Postback Or Callback Argument?

Jan 31, 2011

I have read through many of the questions related to my situation but I have not found one that does. I currently have a repeater with 4 bound items to it, clicking on a button in the repeater causes my error, below is the markup and codebehind. Can someone explain to me why this is happening and the fix for it? (I have excluded the page decleration and just included the page_load event. let me know if i should cut and past full code in)

[Code]...

Set A Property Of A User Control From Repeater Databound Data?

Mar 28, 2011

I have a user control inside of a repeater that is being bound by a sqldatasource. I get the following error: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. EDIT: NEVERMIND Egg on my face. I was getting this databind error because I was binding it somewhere else in an effort to troubleshoot my real problem from last friday but I forgot about it.

WHAT MY REAL PROBLEM IS: The usercontrol is getting bound before the properties get set so it appears as if they are never set. When stepping through I see that they get on the property is hit before the set on the property is hit. For example if I put <%# EVal("Address_ID") %> before the user control I will see the ID displayed but then the user control will display an emptydatatemplate because it is being passed the ID of 0.

<asp:SqlDataSource ID="sqlFacilityAddresses" runat="server" DataSourceMode="DataSet" SelectCommandType="StoredProcedure" SelectCommand="SP_Facility_GetAddresses" ConnectionString="<%$ ConnectionStrings:Trustaff_ESig2 %>">

[code].....

Way To Use A Table Server Control And Add Rows To It Without Having To Re-create It Everytime User Does Postback?

Aug 1, 2011

Im new to .Net and I wondering if you have to re-create a table server control on every postback. I'm having a problem when a user clicks a button which adds a row to the table. It works fine up to about 50 rows being added then the page is extremely slow. [code]

Asp.net - Unable To Add Text Along With <%# Container.DataItem %> In Repeater In User Control

Nov 26, 2011

I have a User Control which is dynamically placed by CodeBehind as follows:

Dim myControl As Control = CType(Page.LoadControl("~/Controls/mainMenu.ascx"), Control)
If InStr(Request.ServerVariables("url"), "/Login.aspx") <= 0 Then
mainMenu.Controls.Add(myControl)
End If

As per an example from my previous question on here.

Within this Control is a repeater which calls a database to generate values.

My Repeater mark-up is as follows

<asp:Repeater runat="server" ID="locationRepeater" OnItemDataBound="getQuestionCount">
<ItemTemplate>

[Code]....

The example above works fine, but I want to be able to prepend text to <%# Container.DataItem %> in the title attribute of that <p> to print to the browser like this is some text DATA_ITEM_OUTPUT

When I try to do that though, it prints this is some text <%# Container.DataItem %> exactly like that, ie, turning <%# Container.DataItem %> into text, NOT the value from the repeater code.

It was working fine before I made it into a dynamically inserted control, so I am thinking I might have something being generated in the wrong order, but given that it works without any prepended text

Asp.net/VB: User Control In Repeater - Catch Click Event Of Button

Feb 23, 2012

I have a User Control. In this user control I have a Repeater. In this repeater I have again a User Control. If I try to catch the click event of an ImageButton in this user control, I'm gettin nothing because the event has not been fired. Is there a way to catch this event?

Some code:

first user control:

[CODE]..........

In myUserControl:

[CODE]..........

This event isn't firing:

[CODE]..............

Also the following does not work because it returns nothing:

[CODE]...................

VB: User Control In Repeater - Catch Click Event Of Button?

Apr 9, 2009

i have a User Control.In this user control I have a Repeater.In this repeater I have again a User Control.If I try to catch the click event of an ImageButton in this user control, I'm gettin nothing because the event has not been fired.

C# - ASP.NET Web Control Shows Old Data After The First Postback

Aug 16, 2011

I'm having a weird problem with a custom Web Control in an ASP.NET forms application. For a web application, I figured that it would save me a lot of time to create a class which inherits from CompositeControl which combines a label with some other control such as a TextBox or DropDownList. This composite control has several properties that wrap properties of the underlying properties (e.g.: EnteredText wraps TextBox.Text). The controls can be used for databinding in the same way as the regular ones, but instead of txtBox.Text = someObject.someProperty you use compositeControl.EnteredText = someObject.someProperty. These controls are then used on ASPX pages and ASCX user controls.

[Code].....

Delicate On Data Repeater Control - .Net?

Mar 9, 2011

I have 3 issues on the data repeater control (in VB.net): 1. How can I trap "the event that fires whenever a row (or similarly a textbox) is edited"?.

[I am able to "trap" events in the case when a new record is added with the help of the ItemsAdded" event, and also with the

help of "DeletingItems" event when deleting a row is in progress.]. I need to trap all these events so that I can "write" my own

[Code]...

Forms :: Using Data Repeater Control In VS 2010?

Jan 27, 2011

Normally, when populating controls with data from a database I create a connection and then pass a SQL statement to create a DataReader. I then loop through the DataReader and populate the controls. Because I am creating the SQL statement on the fly I can query the database joining on multiple tables to get just the columns and rows I need.

Now I'm trying to use the Data Repeater control in VS 2010. The Data Repeater is part of the Visual Basic Power Pack add on. If you don't have it, it is similar to the Data Grid. I've never used the data grid because I found it lacking. I need more control on how to display the data. The data repeater seems as though it will work in this particular instance.

So, following the numerous on-line tutorials I created a new data source and a new dataset using the wizards. I pointed the dataset to a table in my data source and then bound the dataset to the data repeater. It works but the dataset is bound to a table. I can think of very few instances where I would need to dump the data from a table on to form. I need to be able to query the table.

I need to be able to pass a SQL statement to the dataset at run-time. It needs to be able to retain the bindings to the controls or I need to be able to bind the controls at run-time. No property jumps out at me for changing the dataset SQL statement at run-time. I can't see how to bind controls on the data repeater at time time. I can bind a data set to a data repeater at run-time, but I can figure out how to bind the controls to the dataset fields at run-time.

Way For User To Close Web Browser Control / Can Capture Final Url

Oct 29, 2009

I want to give my end user the abilility to navigate to a web page, and then I need a way for the user to close the web browser control so that I can capture the final url. There must be a way but the obvious candidate (a property named "url" of the web browser control) is not there.

Wpf Custom User Control MouseleftButtonDown Capture Area?

May 23, 2012

I have a custom control with an event handler when you click on it. Everything works and the event get fired right.

AddHandler (cu.MouseLeftButtonDown), AddressOf Me.DoSomething

When the control resizes to show some extra information it expands. It also collapses when the user preses a button. This works alright. But now when I click where the expanded area used to be, it still fires mouse leftbuttondown on that control. I have tried to set IsHitTestVisible to false on the expanded element but it diden't work. Here's some xaml...

<UserControl x:Class="MyCustomControl">
<StackPanel>
<Grid>

[code]....

I cant use another element around my customcontrol since I also use this MouseLeftButtonDown on all different kind of controls.
I can't figure out how the boundaries on the cu.MouseLeftButtonDown event work to fix this.

Forms :: Can't Remove The Border Of The Data Repeater Control

Jan 28, 2009

Definitely data repeater is a very nice control. I can't remove the border of the data repeater control.It appears black by default. how to remove the border of the data repeater? I am using data repeater in my c# windows based application.

Capture Which Button Caused The Postback On A Web Form With Multiple Controls Using Asp.net?

Jun 23, 2011

How do capture which button caused the postback on a web form with multiple controls using asp.net

Asp.net - Nested Repeater Show Data That Matches Parent Repeater

Mar 15, 2011

I am using a repeater to build a custom table. However, I can't figure out how to make the table show subtotal if the next rows tour does not match the previous rows.

Something similar to that.

row1 tour1
row2 tour 1
tour1 subtotal

[Code].....

but this shows all the data in the nested repeater not the ones that match the parentrepeater fields for example tour,theme,dep7 should match in the child repeater

Asp.net - Postback From Controls Inside Composite Web Control

Jan 11, 2012

Let's say we have a composite web control with a combobox and a textbox. Is it possible to build into the control functionality such that when the text in the textbox changes, it posts back and adds the value as an option in the combobox?

I know that I could add an "onchange" handler to the textbox and make something work with Javascript, but that's not really what I'm looking to do. Is there a way to just put like:

CODE:

In the web control code and it connect to the TextChanged event of the textbox?

Asp.net - Access A Gridview Inside A Repeater Which Is Inside A Repeater (Nested Repeater)?

Apr 11, 2012

How can I access rep_DataSimilarToBacthid ? I need to bind the GridView and call GridView RowDataBound or InitializeRow

[Code]...

I am using VB.Net with Framework Version 2.0.

Asp.net - Validator Disappears On PostBack Inside Composite Control

Jul 17, 2009

This should be a simple problem to fix, as it uses the same way I fixed my last problem with FooControl (below).

Basically, I want to add a derived validator I made to this composite control. It works fine but on postback it just disappears in the markup, making me think it's lost its ViewState.

I am probably doing something wrong with instantiating it, but I've tried setting only the ControlToValidate, moving things around, and nothing works.

I've provided some surrounding code to see what's working and then what's not.

Private FooControl As IFooControl
Private Validator As MyValidator
Protected Overrides Sub CreateChildControls()

[Code].....

C# - Update User's Role From A Dropdown List Within A Repeater

Jul 5, 2010

I have repeater which shows a list of users and there roles. There is also a dropdown list to chnage there role see below

<td><asp:DropDownList ID="ddlChangeType" class="controlwidth100" runat="server" AutoPostBack="true" OnSelectedIndexChanged="change" /></td>

the change event works but what I need is the ID of the row so the user can be updated.

Css - Why Can't Find The Control Txt In Asp:repeater

Mar 28, 2011

i cant find the control txt which is a textbox in the repeater i have used the following on rgroups itemdatabound event

[Code]....

Getting The Databound Value From Repeater Control?

Aug 15, 2011

As a follow up to my question Looping through a repeater control to get values of Textbox in asp.net
If user has entered a a quantity in the textbox, I want to get the corresponding ProductID value from the repeater control:

[Code]...

I am using FindControl to loop through the textbox (to see if user has entered a valid quantity). How can I get the value of the corresponding ProductID ?

Populating Data On Postback?

Jun 8, 2012

I would like to know if i had two columns from a database called SellerID and Product letter in a table called product, and on a new form i want to be able to combine the columns i.e if the user enters the sellerId and product ID e.g 1A in a SellerProductID in a new table on a new for i want the program to do a postback and have the Description Field be populated with the data from the Products ID Therefore the SellerID + Product letter = SellerProductID and it should select the description in the description field.

Add An 'odd' Class To A Table Row In A Repeater Control?

Mar 16, 2012

Am trying to add an 'odd' class to a table row in a repeater control..

<tr class="<%# If((Container.ItemIndex % 2 == 0), "even", "odd") %>">

I have verified that Container.ItemIndex returns the index number.This causes it to throw this error..First operand in a binary 'If' expression must be nullable or a reference type.I also tried replacing the % with Mod keyword but it throws an "Expression expected" error..

Asp.net - Field Validation In Repeater Control

Feb 28, 2012

I have a question related to asp.net and vb.net. I have a repeater control that I bind some data to and allow users to update/change fields within certain text boxes. I added a validation control to trigger when the user doesn't enter a valid date or the text "TBD". On submit, I want to go through and highlight each field where its corresponding validator is not valid. This is my current code, but I am lost as to how to find the text box control.

Sub ValidateDateField(ByVal sender As Object, _
ByVal args As ServerValidateEventArgs)
'validate against three conditions - date, "TBD", and "N/A"

[Code].....

how to get cont = textbox1row1 of my repeater control.All examples I have seen so far directly state the control as in text1.BackColor =

How To Bind Dictionary To Repeater Control

Nov 10, 2011

I am trying to bind a dictionary to a repeater control. I have a dictionary object which is filled with the Key (as String) and values as (Class object). I receive Object reference error when I try to DirectCast() the e.Item.DataItem to a Key-Value pair of that dictionary used for binding repeater. If you check the second screenshot, the e.Item.DataItem value is "Nothing" because of which I am getting Object reference error. What is the reason that the value is e.Item.DataItem is coming as Nothing?

aspx.vb code behind:
Private Sub PopulateRepeaterValues()
Dim tGetAddItemDtlIn As New nsFWTypeAdm.Item.cdtGetAddItemDtlIn
Dim tGetAddItemDtlOut As nsFWTypeAdm.Item.cdtGetAddItemDtlOut
Dim objItemDL As nsFWIDataAdm.IItemDL
[Code] .....

Make An ASP:Repeater Control Editable Using C#?

Feb 9, 2011

I am following this tutorial to make a repeater control: [URL] I have successfully gotten as far as the tutorial, but I would like to make it editable. How could I get started?

Repeater Control Overlapping For Some Users?

Oct 29, 2010

My whole websites makes use of the ASP.NET(2.0) repeater control and I have been getting some complains from people that they cant view my site as the controls are overlapping.This sounds like a browser issue to me as I never see it in IE8 or IE7 or Chrome or Firefox.

Programmatically Created TextBox Retains Text Value After PostBack Even If Control Is Cleared?

Jan 21, 2011

I have a drop down menu, and based on which item is selected, I call a web service and then dynamically create some text boxes.The first time I drop down the menu and select an item, it works perfectly, and the text boxes are created and populated dynamically. However, the next time I drop down the menu (after the first postback), and select something different..fter the second postback, the original values remain in the textboxes.

ASP.NET Find DropDown Value Inside Repeater Control?

May 31, 2009

I want to find the values from a number of dropdown controls inside a repeater control. I eventually want to build a multidimensional array, so I can loop through each item and add them to a database table.

<asp:Repeater ID="myRepeater" runat="server">
<ItemTemplate>
<asp:DropDownList ID="AdTitle" runat="server">[code].....

.net - Integrating ASP.NET Repeater Control Into Current Page?

Feb 7, 2011

So I currently have a aspx page that shows details for any single staff member, and the page is setup with mostly ASP labels. I have a subroutine called "getstaffdata" that populates the page on load (via subroutine).

I would like to convert this to a page that shows details on one staff member, or many staff members, one after another. So I thought of using the repeater control, but I'm not sure how to convert the page over. The staff userids are passed via query string, but I'm just confused on how to do the datasource for the repeater control.

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