Forms Data Controls :: Custom Method Can't Find Controls In A FormView
Jan 19, 2010
I have method that I call which needs to find all the panels in the page but it fails. I have another method that was created by the VS has the traditional paraeters such the object sender, EventArgs e that the similar code works fine but the (simplyfied) code below. It is clear to me that these parameters contain information that makes one method work while the other not, but I don't know why.
The code breaks on the last line of code: _pnlAssetInfo = (Panel.....
[Code]....
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Similar Messages:
Mar 5, 2010
i have a lot of textboxes inside my formview. how do i find all of these textboxes in my formview?
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Jan 9, 2011
I have a Button on a Masterpage, when that button is clicked I want to find a control on a FormView that's not on the Masterpage.
I tried the followingcode:
[Code]....
and also:
[Code]....
The only thing that is found is the FormView but not the Labelcontrol.
How to do that?
code for FindControlRecursive =
[Code]....
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Nov 18, 2010
I've been pickling my brain trying to do this for a couple of days but to no avail. I have the following in "FormView1" which I'm just using in insert mode:
<td class="style4">
<asp:TextBox ID="urlTextBox" runat="server" Text='<%# Bind("url") %>' CausesValidation="True" Width="200px" />
</td>
I'd like the contents (i.e. whatever the user wants to insert) to be passed to a method where it will be checked against any existing values in the database.
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Feb 24, 2010
I have a Customer database table with a text field named customerPicture with the name of the JPG file.
I have made a Customer Entity class with the LinQ to SQL Designer.
I also have a FormView displaying Customer instance binding with a LinqDataSource.
My problem is:
I want to make some modifications when some control want to bind the customerPicture field.
For example, when my FromView want to show the field customerPicture I want to return not only the JPG file name, I want to modify this string to add the complete file path and perhaps resample the image to a determinate width and height.
I know that is posible to defeine a partial class named Customer to implement certains partial methods, like OnCustomerPictureChanged(), but I dont know how to do this.
If I make, in this Customer partial class, a new method, for example getResamplePicturePath(), how could I invoke it from a FormView?
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May 4, 2010
Is there an equivalent of the GridView.RowDataBound event for the DetailView and FormView controls in ASP.NET 3.5?I need to manipulate data after Selecting it from my database, but before it gets presented to the user. I've read the documentation but I think I've missed something because I can only find FormView.DataBound which is called after the entire control has been data bound. Something like an ItemDataBound event would be what I need....?!?
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Apr 23, 2010
i have a dynamic data layer, i.e every user can add custom fields to database tables, so i need dynamic methods in my application.
i know i can use params to specify a variable number of parameters for a method, but the gridview in asp.net looks for a method with the same fields it is updating, i.e if gridview updates fields :name, age, phone, email(suppose email is a custom field of a certain user i.e it doesn't exit for another), and the object data source calls the update method with signature : (name, age, phone, params object[] custom_attributes) an error is generated that the gridview can not find the method with the signature(name, age, phone, email)
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Jan 20, 2010
Being A C++ programmer this is fairly new to me - I am working on a formview and have been facing a problem- The issue is simple - I want to display a success page after I insert a row successfully and a custom error page if the insertion fails (due to datatype or format mismatch with table in database).
To achieve this I am doing as follows -
1. Defining a custom error page in ASP.NET configuration tool (webconfig)
>> This page never works if I enter an incorrect format in formview. It would rather display the ugly page with Server Error information (for example) -
The string was not recognized as a valid DateTime. There is a unknown word starting at index 0.
question - Why my default page is not getting displayed? Is it because I am testing from same development machine or is it because the error page doesnt work for "Server Error" pages?
2. In the "iteminserted" event I am redirecting it to Response.Redirect("~/newitemconfirm.aspx")
>> If I do this, irrespective of whether the row insertion was successful or not, this confirmation page always gets displayed! I want it to be displayed only on successful insertion.
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May 20, 2010
I need to do a custom update for a form view (I think/know), as some of the parameters that are required for updating values should not be updated by the users, such as userid of the person performing the action which is passed back to the database for auditing purposes.
Additionally, there are some fields, such as LastUpdatedBy, LastUpdatedDate that need to be seen, but not edited. The stored procedure on the backend takes care of this, and these are not parameters for the Update method. The FormView by default is trying to pass all these values back to the database.
Lasty, the select query of the object datasource is a stored procedure that performs several joins based on PF/FK relationships to bring back more meaningful information than just a FK, so some columns are just the joined value, and can not be updated directly. Again, formview is trying to pass these parameters
So given that, I have defined the following even handler for a simple form view:
(not sure if this is the way to proceed given the above, but...)
protected void FormView1_ItemUpdating(object sender, FormViewUpdateEventArgs e)
{
ProjectDetailsDataSource.UpdateParameters.Clear();
ProjectDetailsDataSource.UpdateParameters.Add("projectID", ((Guid)e.Keys["ProjectID"]).ToString());
ProjectDetailsDataSource.UpdateParameters.Add("projectName", (string)e.NewValues["ProjectName"]);
ProjectDetailsDataSource.UpdateParameters.Add("description", (string)e.NewValues["Description"]);
ProjectDetailsDataSource.UpdateParameters.Add("projectTypeID", "1");
ProjectDetailsDataSource.UpdateParameters.Add("statusID", "1");
ProjectDetailsDataSource.UpdateParameters.Add("productID", null);
ProjectDetailsDataSource.UpdateParameters.Add("isComplete", ((bool)e.NewValues["IsComplete"]).ToString());
ProjectDetailsDataSource.UpdateParameters.Add("isActive", ((bool)e.NewValues["IsActive"]).ToString());
ProjectDetailsDataSource.UpdateParameters.Add("userid", Membership.GetUser().ProviderUserKey.ToString());
ProjectDetailsDataSource.Update();
FormView1.ChangeMode(FormViewMode.ReadOnly);
e.Cancel = true;
}
My questions are as follows:
1) Is this the right approach?
2) Is so, when I cancel the edit (because I did the update myself), and change mode, the FormView returns to read only mode as inteneded (good so far). However, when I hit F5 (refresh), the ItemUpdating method is called again, and updates the database.
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Sep 7, 2010
FormView custom data binding problem
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Jan 30, 2011
I have datagrid that is connected via an object data source (VS 2008 / VB). I want to use paging. I have created the required attributes in the ASPX code shown below and with a corresponding Select method. Yet I get the error shown below even throug there is a select method that should work. I have set forth below the error, the ASPX code and the first part of the Select Method.
[Code]....
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Jan 8, 2010
Most likely the later, I think. In my page I have a GridView, DatailsView, and the ODS. None of my commands work. For the Udate command I get a an error "ObjectDataSource 'ObjectDataSource1' could not find a non-generic method 'UpdateVirtual' that has parameters: name, notes, active, original_ident." For the Delete command I get "ObjectDataSource 'ObjectDataSource1' could not find a non-generic method 'DeleteVirtual' that has parameters: ident, original_ident." Yet the Insert command in the DetailsView works fine. Originally I've copied a file that performs virtually identical task, the only difference is a different database and the Select command. I had the Delete command working for for while but that one too broke. Can someone point out what I'm doing wring?
Below is the code:
The *.aspx file:
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true"
CodeFile="Maintain_Virtual_Users.aspx.cs" Inherits="Maintain_Virtual_Users" Title="Maintain Accounts" StylesheetTheme="Master" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<h2>
Maintain Virtual Users</h2>
<p>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AllowSorting="True"
AutoGenerateColumns="False" DataKeyNames="ident"
DataSourceID="ObjectDataSource1" AutoGenerateDeleteButton="false"
AutoGenerateEditButton="False">
<Columns>
<asp:BoundField DataField="ident" HeaderText="ident" SortExpression="ident"
ReadOnly="True" />
<asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
<asp:BoundField DataField="notes" HeaderText="notes" SortExpression="notes" />
<asp:CheckBoxField DataField="active" HeaderText="active"
SortExpression="active" />
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
</Columns>
</asp:GridView>
</p>
<p>
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataKeyNames="ident"
DataSourceID="ObjectDataSource1" Height="50px" Width="393px"
DefaultMode="Insert" AutoGenerateInsertButton="False">
<Fields>
<asp:BoundField DataField="ident" HeaderText="ident" ControlStyle-Width="250"
SortExpression="ident" ReadOnly="True" >
</asp:BoundField>
<asp:BoundField DataField="name" HeaderText="name" SortExpression="name" />
<asp:BoundField DataField="notes" HeaderText="notes" SortExpression="notes" />
<asp:CheckBoxField DataField="active" HeaderText="active"
SortExpression="active" />
<asp:CommandField ShowInsertButton="True" />
</Fields>
</asp:DetailsView>
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
DeleteMethod="DeleteVirtual" InsertMethod="AddVirtual"
OldValuesParameterFormatString="original_{0}" SelectMethod="GetVirtual"
TypeName="VirtualPeopleBLL" UpdateMethod="UpdateVirtual">
<DeleteParameters>
<asp:Parameter Name="ident" Type="Int32" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="ident" Type="Int32" />
<asp:Parameter Name="name" Type="String" />
<asp:Parameter Name="notes" Type="String" />
<asp:Parameter Name="active" Type="Boolean" />
</UpdateParameters>
<InsertParameters>
<asp:Parameter Name="ident" Type="Int32" />
<asp:Parameter Name="name" Type="String" />
<asp:Parameter Name="notes" Type="String" />
<asp:Parameter Name="active" Type="Boolean" />
</InsertParameters>
</asp:ObjectDataSource>
</p>
</asp:Content>
the .BLL:
using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.ComponentModel;
using dsVirtualPeopleTableAdapters;
[System.ComponentModel.DataObject]
public class VirtualPeopleBLL
{
private VirtualPeopleTableAdapter _virtualPeopleAdapter = null;
protected VirtualPeopleTableAdapter Adapter
{
get
{
if (_virtualPeopleAdapter == null)
_virtualPeopleAdapter = new VirtualPeopleTableAdapter();
return _virtualPeopleAdapter;
}
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Feb 9, 2011
I'm trying to implement a custom GridView to find a cell by its name. Here is my class:
[Code]....
how I can implement the SET part of property?
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Jan 6, 2010
In a GridView control ASP.NET
OnRowDataBound="gvTest_OnRowDataBound" followed by
protected void gvTest_OnRowDataBound(....){}
OR
Text='<%# BindMyData(DataBinder.Eval(Container,"DataItem.Price"), DataBinder.Eval(Container,"DataItem.CurrencyID")) %>'
followed by
protected string BindMyData(object price, object currencyID)
{...}
Which one is best in terms of performance and coding best practice?
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Dec 4, 2010
I have a DetailsView control about a store products.
When I hit the "Edit" button of the DetailsView control, I want to bind a DropDownList to list products categories and select the current product category in it.
I used the method "ModeChanged" to select the current product category like this:
[Code]....
the FindControl method DOES NOT find the "ddlCategory" (returns null) although it's present in the EditTemplateField.
I'm thinking to use "DropDownList's PreRender" event for doing the purpose I aim, but I want to know what is wrong!
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Mar 8, 2010
I'm using Postgresql/Npgsql in my asp.net application, so I can't use LINQ to SQL. I implemented the following method of User class:
[Code]...
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Jan 29, 2010
I am trying to create strogly typed datasets for my project. When I right click on the xsd file that I need to generate a strongly typed dataset for I can't find the 'Advanced' properties as described in the below article (almost half way down)[URL]As I do not see the Advanced properties option I can't find the 'Custom Tool' property/option to set its value to 'MSDatasetGenerator'. Do I have to install some kind of patch on my VS 2005?
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Nov 29, 2013
I have detailsview control with bound fields...some using Templatefields. I am trying to access values in those fields but i get nulls....i really dont know why..I am proving all my code....
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Projects.aspx.vb" Inherits="Projects" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Projects Statuses</title>
[code]....
I guess something might be getting messy with the mode changing event... a postback? But if i remove the databinding code, i get an error! why find control returns null??
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Feb 9, 2011
I'd like to implement a custom paging template for my formview that displays numeric paging as well as next/previous buttons. The pre-defined templates only appear to have numeric first last as an option. Can anyone recommend a good article that covers this?
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Nov 29, 2010
I am creating a custom control by inheriting a server control, say LinkButton. There are properties like "BorderColor" available in LinkButton. Let's say, I don't want this particular property to be available when I create an instance of the custom control.
I want to completely hide this particular property (I don't want to override it but disable it.)
My code is as follows:
[Code]....
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Jan 27, 2010
I have created a class which inherits the HyperLinkField. I need to find the data values of the fields specified in the DataNavigateUrlFields property. I have not been able to figure out how to do this.
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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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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 23, 2010
I have FormView in my page markup:
[code].....
In theory, I'm able to find control on FormView after it being data bound. But I'm not. Why?
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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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