Web Forms :: User Control For Formview- Gridview Combo?

Jan 24, 2011

have a formview tied to a gridview and uses entity datasource. THe formview is used for editing the record selected in the gridview and for inserting records. The code is now in an asp page. I want to create a user control for this. I am new to usercontrols.

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i have 2 combobox A & B.. the values in B is populated according to selected value in A,, my code works fine when i click combo A and select a item,, the values according to it get populated on combo B. i have written it on the change event...

But when i use tab to navigate and select the items in combo A and change on pressing keyboard down key...the items in combo B is not getting populated with new values.. existing values does not get changed,,, ie change event is not getting fired... how can i manage it in down/up key in keyboard when using tab,,,,

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i create a composite control as can be seen in code below, and add this control to webform, assign FormView1 to the HeaderControlName property, Run the page, the system will generate parse error message :
Cannot create an object of type 'System.Web.UI.WebControls.FormView' from its string representation 'FormView1' for the 'HeaderControlName' property. However, if i don't assign FormView1 in design screen and manually (through coding) assign FormView1 to the custom control on init, it works as expected.

custom control
public class CmdTest : CompositeControl
{
public virtual FormView HeaderControlName
{
get
{
object oObject = ViewState["HeaderControlName"];
return (oObject == null) ? null : (FormView)oObject;
}
set
{
ViewState["HeaderControlName"] = value;
}
}
protected override void CreateChildControls(
{
Controls.Clear();
Button xx = new Button();
Controls.Add(xx);
}
}
webpage.aspx (assign FormView1 in design time, it will generate error)
<Utils:CmdTest ID="CmdTest1" runat="server" HeaderControlName="FormView1" />
webpage.aspx (didn't assign FormView1 in ASPX, but assign it on Init Code, it works)
<Utils:CmdTest ID="CmdTest1" runat="server" oninit="CmdTest1_Init" />
Webpage.aspx.cs
protected void BsCmdTest1_Init(object sender, EventArgs e)
{
CmdTest1.HeaderControlName = FormView1;
}

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[Code]....

And the code behind:

[Code]....

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Basically as the title of this thread states, I have a FormView that has a GridView inside it and my ObjectDataSource that populates this grid cannot access the Grid.

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[Code]....

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I have a formview with an insert item template. I have added two dropdown controls that are databound to two different database tables to this insert template. However, when I click the 'InsertQuery' for the Accessdatasource neither of these controls are available as 'Parameter source options'.Out of interest, if I take these dropdown controls out of the formview and put them on the page they then become available to use.

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I don't think I understand fully how ASP.NET does inheritance of controls.I have a user control, ucBase, which has an asp.net label in the ascx file. Code behind references the label and it works fine during run time if the control is not a parent for another user parent.

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Web Forms :: Accessing A Public Property Of A Nested User Control In A Master Page From A Pages' User Control?

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I've got a web site that has a master page and that master page (mpMaster that has a user control ucControl1) which has a sub user control (ucControl2), this user control has a property which accepts a value. Now, I have a page that uses the master page
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I have created a gridview (this is a usercontrol) with another gridview (also a usercontrol) inside it. Now I would like to bind a checkboxlist to the inner gridview. This is my markup for the inner gridview user control

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I am trying to assign user control from another user control ..first time its binding control successfully but when we refresh the data its giving error

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I binded user control in gridview dynamically using templatefield (through code behind)

User control consists of 2 textboxes and one dropdown.

There is one button outside the gridview on the form. On click of that button i have to save the values of usercontrol's (child controls i.e textbox and dropdown values) but i am not able to get the values of user controls.

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I have user control. Inside that have some buttons. my page has gridview . I want check grid view rows from user control button. User control is my menu. My grid has column with radio button.

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I want to create user control for gridview paging, so it may be reusable for every grid in my application, my user control should be like below, how its possible

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Forms Data Controls :: .NET 3.5 FormView With User Entered Primary Key Update Error?

Aug 9, 2010

I'm trying to create a Formview in ASP.net 3.5. The underlying SQL Server table does not have an identity field based Primary Key. The primary key is a 4 character user entered field. I have created the form and all looks good but I get the following error message when I try to insert a record

Could not find a row that matches the given keys in the original values stored in ViewState. Ensure that the 'keys' dictionary contains unique key values that correspond to a row returned from the previous Select operation.

I thought ViewState was supposed to resolve the issue. I have viewstate enabled on the page and the formview but that doesn't seem to make a difference.

How can I create a form view with a user-entered text field as the primary key and get the b.... thing to work?

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Forms Data Controls :: Filter On User.Identity.Name - FormView Disappearing From The Web Page?

Oct 21, 2010

I have a FormView and the SELECT statement I have is as follows:

SelectCommand="SELECT [UserName], [Full_Name_1], [Full_Name_2], [Email], [Address], [City], [State], [Zip_Code], [Home_Phone], [Cell_Phone] FROM [Homeowners] WHERE ([UserName]='<%$ User.Identity.Name %>')"... but it results in the FormView disappearing from the web page. Note: at the top of the page,
<%= user.identity.name %> displays the name fine, so user.identity.name does contain the info I'm looking for.I am trying to figure out how to correctly format the SELECT filter to feed user.identity.name to the SELECT statement as a filter. ... or if there is an alternative way.

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Forms Data Controls :: Handling Events From A User Control Inside A GridView?

Jun 4, 2010

I have a user control called ucTriStateButton. It raises an event when it is clicked, called TriStateButtonClicked. If I put this user control on a page, it works fine. Here is the declaration on the .aspx page:

[Code]....

When the button is clicked the method tsbTest_TriStateButtonClicked executes correctly.

The problem is when I put the user control in template field of a GridView.

[Code]....

There is no way to hook the event handler to the control in Page_Load because I cannot get a reference to tsbMorning. So I did it in the RowDataBound event handler of the GridView, where I also do a bunch of other row-specific stuff. Although this builds and runs, the event is never actually subscribed to and so never gets fired.

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