Forms Data Controls :: Manual Selection Between EditItemTemplate And ItemTemplate?

Nov 10, 2010

I have a gridview which uses an EditItemTemplate and an ItemTemplate for an 'Effect' column. The ItemTemplate simply displays the bound data using a label control. The EditItemTemplate defines a databound DropDownlist control which contains all the possible selections.

The gridview also contains a bound 'State' column which gives the State of each row. I have already been able to access this field in the gridview_RowDataBound event, so far using the value to decide whether to re-colour a row or not. What I would like to do is use this value to determine whether to use the ItemTemplate or the EditItemTemplate for each row.

Effectively I want to be able to decide whether to display just the data (For an Approved row) or display the DropDownList and allow the user to make updates (For an In Work row). I have searched for information on this issue online but have not found a lot, so I presume that my approach is not possible.

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I have a formview with both edititem template and item template as following:

<asp:FormView ID="PFTFormView" runat="server"
DataKeyNames="PFTId"
EnableModelValidation="True" Width="90%"
OnItemUpdating="PFTFormView_ItemUpdating"
onmodechanging="PFTFormView_ModeChanging" >
<EditItemTemplate>
<table>
<tr><td class="style1">PFTId</td><td class="style3"><asp:Label ID="lblPFTId" runat="server" Text='<%# Eval("PFTId") %>' /></td></tr>
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<tr><td class="style1">First Name</td><td><asp:TextBox ID="txtPFTFirstName" runat="server" Text='<%# Bind("PFTFirstName") %>' Width="200px" /></td></tr>
<tr><td class="style1">Home</td><td><asp:TextBox ID="txtPFTHome" runat="server" Text='<%# Bind("PFTHome") %>' Width="200px" /></td></tr>
</table><br />
<asp:LinkButton ID="UpdateButton" runat="server" CausesValidation="True"
CommandName="Update" Text="Update" />
<asp:LinkButton ID="UpdateCancelButton" runat="server"
CausesValidation="False" CommandName="Cancel" Text="Cancel" />
</EditItemTemplate>
<ItemTemplate>
<table>
<tr><td>PFTId</td><td><asp:Label ID="lblPFTId" runat="server" Text='<%# Eval("PFTId") %>' /></td></tr>
<tr><td>Last Name</td><td> <asp:Label ID="lblPFTLastName" runat="server" Text='<%# Bind("PFTLastName") %>' /></td></tr>
<tr><td>First Name</td><td><asp:Label ID="lblPFTFirstName" runat="server" Text='<%# Bind("PFTFirstName") %>' /></td></tr>
<tr><td>Home</td><td> <asp:Label ID="lblPFTHome" runat="server" Text='<%# Bind("PFTHome") %>' /></td></tr>
</table><br />
<asp:LinkButton ID="EditButton" runat="server" CausesValidation="False"
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</ItemTemplate>
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on my code behind, I have:

Sub PFTFormView_ItemUpdating(ByVal sender As Object, ByVal e As FormViewUpdateEventArgs)
Dim PFTObj As New PFT
Dim PFTDST As New Data.DataSet
Dim newPFTLastName As String = DirectCast(PFTFormView.FindControl("txtPFTLastName"), TextBox).Text
Dim newPFTFirstName As String = DirectCast(PFTFormView.FindControl("txtPFTFirstName"), TextBox).Text
PFTObj.PFTLastName = newPFTLastName
PFTObj.PFTFirstName = newPFTFirstName
PFTObj.PFTHome = DirectCast(PFTFormView.FindControl("txtPFTHome"), TextBox).Text
If PFTObj.UpdatePFT(Session("PFTId")) Then
Me.lblErrorMessage.Text = "PFT Update Successfully"
Else
'
Me.lblErrorMessage.Text = "PFT Update UnSuccessfully"
End If
PFTDST = Nothing
PFTObj = Nothing
end sub

The problem is:

PFTObj.PFTLastName = newPFTLastName
PFTObj.PFTFirstName = newPFTFirstName
PFTObj.PFTHome = DirectCast(PFTFormView.FindControl("txtPFTHome"), TextBox).Text

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I have a formview which binds to a table where one of the fields is an integer zip-code field. I want to pad the zip with a leading zero in the edit template when the zip is something like "02134". How do I edit the bound data without "breaking" the two-way binding?

I wrote simple function to add the zero and return a string:

Public
Function padZIP(ByVal zip
As
Integer)
As
String
Dim tmpStr
As
String =
CType(zip,
String)
If tmpStr.Length = 4
Then tmpStr =
"0" & tmpStr
Return tmpStr
End
Function

and I can call it in the itemtemplate fine:

<asp:Label
ID="ZipLabel"
runat="server"
Text='<%# padZIP(container.dataitem("Zip")) %>'
Width="30"
/>

but, trying to do that in the edititemtemplate breaks the binding?

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I create dynamicaly a gridview and with to also create the EditItemTemplate dynamically.

This is how I add dynamically columns to my gridview.

[Code]....

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Protected
Sub
DataList1_EditCommand(ByVal

[code]...

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I have a gridview and it has two ItemTemplates for editing, which replace a label with a dropdownlist. The dropdownlists are databound in the RowDataBound function as shown below. It works just fine except for rows which are in the Alternate rows (as defined by the auto format selection.) In essence, the ItemTemplate is replaced by the EditItemTemplate properly bound; but the AlternatingItemTemplate is replaced by empty dropdownlists. Is this a known feature? Is there a workaround?

[Code]....

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I am handling the row databound event. I need to bind a dropdownlist which is present only in the EditItemTemplate.

So it is throwing:

DropDownList ddlAccountingPeriod = e.Row.FindControl("ddlAccountingPeriod") as DropDownList;
UIControlHelper.BindApprovalPeriod(ddlAccountingPeriod);

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Is there a way to check whether it is itemtemplate or edititemtemplate.

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pnl_onselectedvalue
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