Forms Data Controls :: Formview - ParseControl And OnTextChanged
Sep 20, 2010
I have a formview with some templates. This is hooked up using objectdatasource. To the default layout I add some additional Label/Textboxes dynamically based on metadata in a database. I create the additional controls in the ItemCreated event using ParseControl on a Placeholder and populate the values in the DataBound event. This all works fine.
I have been modifying the extra textboxes using a ForEach loop in the ItemUpdated and ItemInserted events of the main formview. However this modifies each textbox regardless of whether the textbox has changed. What I want is to only modify the textbox if it has changed. I have tried to hook up OnTextChanged for the additional textboxes (using ParseControl) but the handler is never getting called. I thought maybe I was making a mistake in the execution order of the page but now I'm wondering whether ParseControl isn't hooking up the event handler correctly? Anyone come across this?
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Similar Messages:
Jan 21, 2010
I got a formview which has a textbox control, when I tab to the next box, OnTextChanged doesn't fire.
aspx page:
Following code is in <InsertItemTemplate> in FormView
<asp:TextBox ID="txtPhone" runat="server"
AutoPostBack="true"
OnTextChanged="txtPhone_TextChanged">
code behind:
protected void txtPhone_TextChanged(object sender, EventArgs e)
{
....
TextBox Phone = (TextBox)fv.FindControl("txtPhone");TextBox
....
}
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May 7, 2015
I am using a calendar extender which is an Ajax control I am selecting a date but the event is not fired.
The reason I am doing this is because I am setting an expiry date based on the date selection.
<asp:TextBox ID="start_date" Width = "165px" Height = "24px" runat="server" OnTextChanged="start_date_click"
></asp:TextBox>
<asp:TextBoxWatermarkExtender ID="TextBoxWatermarkExtender1" Enabled="true" TargetControlID ="start_date" WatermarkText="Start date" runat="server">
</asp:TextBoxWatermarkExtender> <asp:CalendarExtender ID="CalendarExtender1" Enabled="true" runat="server" TargetControlID ="start_date" >
</asp:CalendarExtender>
The code behind
protected void start_date_click(object sender, EventArgs e){
DateTime begindate = DateTime.Parse(start_date.Text);
exirydate.Value = Convert.ToString(begindate.AddDays(days));
}
Is my codebehind code correct. Am i not doing in a right way.
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Sep 10, 2010
I would like to ask if it is possible to access data on a master FormView from a nested detail FormView.
I have a main form (master) with several tabs (detail) and would like to display a label with text from main form that is hidden by the tab at the moment of editting. My asp page looks like this.
[Code]....
Is it possible to get the value of the label CompanyTextLabel from CompanyTextBox using just ASP.NET expressions or something similar without writing c# code in .cs file?
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Apr 10, 2010
I have a nested formview. I need to set a value for a textbox when I'm in insert mode from parent formview which is editmode.
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Jan 24, 2010
I have a formview that use the formview iteminserted event. The information inserts into the formview fine, but all cells blank out after the insert. How can I make it so I can show all the values I have inserted show up in the formview after the inteminserted event?
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Oct 12, 2010
In the process of migrating an old VS2003 web app to VS2008, I'm running into this issue and haven't been able to find a resolution. Sample code: "Default.aspx" has a PlaceHolder(ToolHeader). In the Page_Load(), we dynamically load a user control passing in the virtual path to a helper method [public Control ParseUserControl(string virtualPath)]. This reads the content from the physical path, returns
a Control from ParseControl() method. I immediately get the following error when I open the default.aspx page in browser.
Parser Error
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Could not load type 'DynamicUC.UcControl'.
Source Error:
Line 1: <%@ Control AutoEventWireup="true" CodeBehind="UcControl.ascx.cs" Inherits="DynamicUC.UcControl" %>
Can't figure out why it can't load the type. Namespaces are looking right. I try removing the Inherits="DynamicUC.UcControl" attribute from the "ucControl.ascx", it loads the page fine. Also, this control is a simple one and has no code behind. There are others with actual code behind. They won't work if I remove the Inherits attribute.
[Code]..........
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Sep 2, 2010
I have a page with a FormView on it. The page is strictly for adding records to a Table. I have the FormView bound to an EntityDataSource and everything works greate except for one thing.
I want to initialize a date field in the FormView to today's date. So, in my page_load event I have:
if (!Page.IsPostBack)
{
//Initialize SetupDate to today.
TextBox setupdate = (TextBox)fvJob.FindControl("txtSetupDate");
setupdate.Text = DateTime.Now.ToShortDateString();
}
The first time this page loads, the txtSetupDate field is initialized.
Although, and subsequent loads of the page doesn't initialize the Text Box. I step through the code in the debugger and I can see that the code is executig, but something (the FormView bind?) is "clearing" the Text Box.
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Apr 28, 2010
Are there any other events besides the OnTextChanged event? Like is there a key up event of some sort?
What I'm trying to accomplish is when a user fills in this text box it automatically fills in a couple other text boxes.
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Feb 18, 2010
Having some strange behavior here. I have some XSLT which generates some html with a few ASP.NET Link Button Controls
String mstring = sw.ToString();
var myctrl = Page.ParseControl(mstring);
foreach (Control Control in myctrl.Controls)
[code]...
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Jun 24, 2010
I am using the following line is my code and the onTextChanged event is not firing. But when I use the onClick event on the same code, it's firing.
textbox1.Attributes.Add("onClick", "SetValue();")
But I need to do my calculations only if the value in the textbox is changed not when the user clicks on the textbox.
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Apr 3, 2010
On my page, the user is basically registering for a site and I am trying to do a username availability check, without doing the javascript myself(not very good with it yet). The code that is shown below shows the contents for 1 out of 5 textboxes on the page. They all are in the same validator group that is triggered by a button. I have tested the availability query check itself and it works, but only once the submit button is clicked. Nothign is happening when I tab away from the textbox after enetering text.And this page is actually 3 tabs (not sure if there is some sort of a bug that involves tab containers possibly).
I here's the client-sdie code for the page (at least what pertains to this):
[Code]....
And here is the server-side:
[Code]....
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Apr 8, 2010
i have the following scenario: one formview. when in editmode there is a child formview linked to the other by a column value. i need to take the value of one of the values of parent formview controls and set it to a textbox of child formview in insert mode. I wish to know which event should I use in codebehind to bind both controls? (that escenario will have paging and must keep the binding as if it was master detail)
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Jun 25, 2010
I have an gridview with 3 columns. As default I entered for each columnns an headertext, but depending on an language parameter in the data the headertext is changed on page_load with a SetLabels function.
Recently I added an templatefield textbox with an autopostback=true and an ontextchanged event :
When a user changes the text in the textbox all events are executed properly BUT my headertext is set back to the default value (from the .ascx) even tho page_load event is executing properly WITH the SETLABELS function.
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Jul 28, 2012
I have 10 text box in a page like txt1,txt2...etc
In text box onchange i call the javascript function
for calculating txt5 value
i.e.
in javascript method,
txt5.value = parseFloat(txt1.value) + parseFloat(txt2.value) + parseFloat(txt3.value) + parseFloat(txt4.value);
and
text box txt5 enabled=false,autopostback is true
protected void txt5_TextChanged(object sender, EventArgs e)Â Â Â {Â Â Â Â Â Â // here based on txt5 value i getting records from database and doing some calculation and display those value in txt6,txt7
   }
The problem is the textbox txt5 can;t post back when text change from JavaScript function.
How can I do postback when text box value bind from JavaScript function and enabled=false.
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Feb 1, 2011
Using a class component, an Object data source and a formview I am successfully pulliing data from a SQL database. In some cases the rows contain one or more Null values and I would like them to be ignored completely. My simple code follows:-
<%# Eval("add_1") & ","%>
<%# Eval("Add_2") & ","%>
<%# Eval("Add_3") & ","%>
OUTPUT:-
Rose Cottage, 123 New Road, Margate,
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Jul 27, 2010
I am creating a html table dynamically with some content and along with that want to add asp.net textbox control under one of its row. I am adding the control as
<tr> <td><div>Text :</div></td><td> <asp:TextBox ID='txtNoOfLicences_'"+j.ToString()+ "runat='server' Width='81px' OnTextChanged='txttext_TextChanged' AutoPostBack=true MaxLength='4'>1</asp:TextBox><asp:Button ID='btnTotal_'"+j.ToString()+" runat='server'
Text='Go' OnClick='btnTotal_Click' /></td></tr>
I want to call the OnTextChanged event of a static control added on aspx page.But the textbox is not getting displayed.Similarly I want to add a asp.net button also but it is also not visible.
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Jan 4, 2010
I am displaying selectable rows in a gridview. The selected row uses a stored procedure to display all the fields in a formview when the Select button is clicked.
Only a small subset of the fields in the selected row are editable. When I click the Edit button only the EditItemTemplate fields show up, the read-only fields from the ItemTemplate disappear. I want the read-only rows to remain visible with the editable rows.
If I include the read-only fields in the EditItemTemplate, I get an error when I click Update on the FormView. The error states that there are too many parameters being passed to the stored procedure to update fields. How can I continue to show the read-only fields with the editable fields on the FormView and avoid getting the input parameter error on the stored procedure for the Update command?
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Aug 9, 2010
I am running Visual Studio 2008 Version 9.0.30720.1. I created a Web App with a FromView and in IE7 it works great. My company pushed an upgrade to IE8 and all of a sudden when I run my Web App to test it, the formview completely dissapears. I tried running IE8 in Compalability View but it still does not work.
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Jan 25, 2011
I have a FormView. When this FormView has some data in it I want to clear it with one button click.
But how?
I have tried the following but that didn't do the job:
[Code]....
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Nov 15, 2010
Have a Formview set up to edit a single record in an SQL table. It displays the record fine, but when you click the "update" link it just appears to do a postback and nothing else.After the postback you're looking at the original record without any of the changes you just tried to make.I went to my Dataset TableAdapter and checked the UDATE query there..it works fine, I was able to change a record.My ObjectDataSource is correctly configured to use the UDATE query--I triple checked all that.
[Code]....
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Sep 20, 2010
I have a formview and I want to do a lot with it.First I want to go from page a to page b where page b is a formview in insert mode.After the data is in a database a want to go to page b in select mode (readonly). With a button I want to go to update mode, so you can change your profile.But whatever I do, I stuck with filling up the formview and get the right data.My prograexist off fist make a user with a create user wizard.
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Apr 25, 2010
I would like use radiobuttonlist with my FormView with INSERT/Edit buttons, I want once user selected one of Radio button in Radiobuttonlist, it should assign value to my database.For example I have 3 Radio button in Radiobuttonlist, if user chose option 1, then save in my database option1 and the other save it NONE. That mean I have in my database three field which they are (option 1 - NONE - NONE).I hope you get my point. I am still learning ASP.NET, thank you for your support.
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May 18, 2010
I am trying to bind a FormView on runtime in codebehind (instead of using predefined datasource).
[Code]....
GetCase will return a DataTable with just 1 row.Then on my aspx:
<asp:FormView DefaultMode="ReadOnly" runat="server" ID="FormView1" DataKeyNames="complaint_ID">
<ItemTemplate>
<asp:Label ID="lblComplaintID" runat="server" Text="<% Eval('case_ID'); %>" />
</ItemTemplate>
</asp:FormView>
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Feb 22, 2011
To insert a new product to table [Products] in DB i have a formview. The formview includes a DropDown list taken from foreign table called [Status]. The table [Status] includes fields ID and Status (Status values are: Inn, Out, Damaged).
When i choose from the DropDown i want the textvalues from Status to be displayed (so far im good) but then i want the [Status.ID] to be inserted in [Products.Status_ID] so the cell value will be 1, 2 or 3. This because [Products.Status_ID] is the foregin key to [Status.ID] so that i have the ability to sort products after Status value later.
But do i really need that foreign key? Do i just complicate it further by doing it this way? Perhaps Status could just be a regular string with no foreign key...?
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