Web Forms :: Convert A Detailsview Row Into A Dropdownlist?

Oct 14, 2010

I was wondering if it is possible to convert a detailsview row into a dropdownlist, populated by data from an access table.

Also is it possible to attach a calendar to a row of the datailsview row, so that the row will be populated by a date upon user selection.

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I want to making another dropdownlist visible=false when clicking in dropdownlist on the same detailsview?

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I want this code to work in a DetailsView -

[Code]....

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DetailsView with DropDownList

Code]....

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My DetailsView is bound to a table where I have a DDL (drop down list) where the selection queries the DetailsView. I tworks except for when I try to select the first item (after selecting other items). It doesn't query the first selection. But it queries the other selections.

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How the HTML code and the Binding should look for this details view ?

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Web Forms :: Passing Values From 1 Dropdownlist To Another In Detailsview?

Oct 8, 2010

I have a problem I have been googling the entire day and still have no soloution. I have a detailsview with 2 dropdownlists. Fisrt one is ddlCaregory. Second is ddlSubCategory. The value is passed from the first ddl to display the SubCategory linked to ddlCategory. Both ddlCategory and ddlSubCategory are Templatefields. This is also in VB.

The Details view has a sqlDataSource (sdsApplicants), ddlCategory has a Datasource (sdsCategory) and ddlSubCategory (sdsSubCategory). ddlCategories lists the data returned from sds Categories and save any changes to sdsApplicants. I can get ddlSubCat to display the correct SubCatagory bases on ddlcategory sesection but as soon as I try bind it to sdsApplicants I get the following error

'ddlSubCategory' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value

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Forms Data Controls :: DropDownList In DetailsView Without SQLDataSource?

Nov 2, 2010

I am trying to use a DropDownList in a DetailsView for the ItemTemplate, InsertItemTemplate, and EditItemTemplate. I must bind this DropDownList to a SQL-Server support table using a function that returns a DataTable. I am not allowed to use a SQLDataSource in my backwards IT department. So, not only do I need to load the DropDownList, I also need to make the SelectedValue equal to the current record that I am viewing, editing.

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Forms Data Controls :: DetailsView Filling DropDownList?

Mar 13, 2010

I've got a DropDownList in my <EditTemplate> and i'd like to fill it by data from database

(I can't use SqlDatasSource).

How to do that?

i was trying something like that

((DropDownList)((DetailsView)sender).FindControl("autor")).DataSource = MethodIveCreate();
((DropDownList)((DetailsView)sender).FindControl("autor")).DataBind();

on DetailsViewChanging method nut i've got error :/

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Forms Data Controls :: Can't Insert From A Dropdownlist Within A Detailsview?

Oct 18, 2010

I figure that this should be relatively straightforward, but I still can't get it to work. I have a gridview and a detailsview to set up shifts for students and teachers. I would like to be able to insert new shifts using a detailsview. I will limit the students, teachers and location to items that are in a dropdownlist. The problem is that when I handle the iteminserting event. the e.values collection doesn't contain all of the fields I want to populate. How do I add the new fields to the list. This is my codebehind:

Sub On_Inserting(ByVal sender As Object, ByVal e As DetailsViewInsertEventArgs)

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How To Convert DetailsView Columns To Uppercase

Oct 7, 2010

I need to be able to convert all input fields in a DetailsView (Insert) to uppercase. How do I do this? My SQL query and the whole insert statement takes place in ASP.NET, and not in code behind so I'm not sure if I can dynamically do this in ASP.

I've used Text-Transform in CSS to make them look uppercase for the user, but it still enters the details in lower case in the field.

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Forms Data Controls :: Cannot Insert Value Of Bound Dropdownlist In Detailsview

Apr 25, 2010

I have a dropdownlist in the edititemtemplate of a detailsview. The dropdownlist is bound with an objectdatasource. The detailsview is bound to a seperate objectdatasource which connects it to the insert method. When the page loads the dropdownlist is bound properly. However, when I make a selection and select insert I get the following error: Could not find a property named 'DeptID' on the type specified by the DataObjectTypeName property in ObjectDataSource 'objCurrentProduct'. I've tried to remove the SelectedValue='<%# Bind("DeptID") %> attribute. I can then insert without an exception being thrown but the selected value of the dropdown is not recognized. Here is the code:

[Code]....

[Code]....

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Forms Data Controls :: How To Get Value Of A Dropdownlist Within A DetailsView Template Field

May 18, 2010

I have a template field in a Details View which is a dropdown selection of values.While I can get the value of the textfields in the DetailsView by using: DetailsView1.Rows(i).Cells(1).Text.ToStringI don't know how do extract a value from a dropdownlist2 contained in the DetailsView.

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Forms Data Controls :: Error In Editing DetailsView With Dropdownlist

Feb 22, 2010

ASP.NET - C# (C Sharp) - SQL Server

I've got a master table and a child table. The master table has a nullable column called ReferenceID and in some cases it should be NULL, but when it's null in a record, I get an error while going to Edit mode of DetailsView.

DB Tables:
MasterTable [Columns: MasterTableID (PK), Name, ReferenceID (FK)(Nullable)]
ReferenceTable [Columns: ReferenceID (PK), Reference]
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False">
<Fields>
<asp:BoundField DataField="MasterTableID" HeaderText="MasterTableID"/>
<asp:BoundField DataField="Name" HeaderText="Name"/>
<asp:TemplateField HeaderText="Reference" SortExpression="Reference">
<EditItemTemplate>
<asp:DropDownList ID="DropDownList_Reference" runat="server"
DataSourceID="ObjectDataSource_ReferenceTable" DataTextField="Reference"
DataValueField="ReferenceID" SelectedValue='<%# Bind("ReferenceID") %>'>
</asp:DropDownList>
</EditItemTemplate>
<ItemTemplate>
<asp:Label ID="LabelReference" runat="server"
Text='<%# Bind("Reference") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" />
</Fields>
</asp:DetailsView>
Select Queries:
Select MasterTable.*, ReferenceTable.Reference
From MasterTable INNER JOIN
ReferenceTable ON MasterTable.ReferenceID = ReferenceTable.ReferenceID
Select * from ReferenceTable

In Read Only mode all everything is OK, but when I click on Edit and Postback happens, I get the following error: Server Error in '/Sample' Application. 'DropDownList_Reference ' has a SelectedValue which is invalid because it does not exist in the list of items.Parameter name: value It means that in MasterTable, the ReferenceID shouldn't be NULL, but it should be in some cases.

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Forms Data Controls :: Detailsview Edit For Cascading Dropdownlist

Mar 2, 2010

I have created two dropdown lists. The 2nd DDL depends for values on the 1st DDL. I have written code on the SelectedIndexChanged event of 1st DDL to change values of 2nd DDL. also i have used detailsview. In the template field i have used 2 DDL mentioned above. they are having SelectedValue='<%# Bind("") %>' property. Everything works fine but when i tried to edit record in detailsview & select value from 1st DDL then it gives me following error.

Server Error in '/' Application. Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.InvalidOperationException: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.

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Forms Data Controls :: Cascading DropDownList In DetailsView Field?

Feb 9, 2011

I have an ASP.NET/C# web project that uses an Entity Data Model and Entity Framework to interact with my database. I also have a DetailsView control that will serve as the control used to insert a new record. The user will need to be able to select from multiple,
cascading dropdownlist controls to determine what parent record this new record will belong to. Here is an example.Say we have an online ordering system with the following hierarchy.

Customers -> Orders -> OrderParts -> Parts

We're going to add a new part to an order, under a customer. Ultimately the orderparts table won't have a reference to a customer, just an order. The order will have the reference to the customer. In the DetailsView for the new orderparts record we will need two cascading dropdownlist controls. One for customer and one for order, since we won't want to view some crazy amount of orders all in one dropdownlist.

However, the customer dropdownlist should not be bound to the detailsview control since there is no field for it. I also don't want to use the AJAX control since I don't want to create a separate web service to provide all of this information to the dropdownlist controls.

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Forms Data Controls :: Detailsview Dropdownlist And Label - Integer Not Valid?

Jan 31, 2011

i am using visual studio 2008 vb. i have a dropdownlist in my detailsview populated with product id. when i select an id, the product name will appear on a label. however, when i change the product id in the dropdownlist, an error occur "Conversion from string "ProductName" to type 'Integer' is not valid." Here's the code file.

Protected Sub DropDownList1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)
Dim lbl As Label = DetailsViewOrderDetails.FindControl("Label4")
Dim ddl As DropDownList = DetailsViewOrderDetails.FindControl("DropDownList1")
lbl.Text = ddl.SelectedValue("ProductName").ToString()
End Sub

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Forms Data Controls :: Binding A Static DropDownList Inside A DetailsView?

Jan 30, 2010

How do I bind a DropDownList inside a DeatilsView?

I have something like that... but I'm unable to bind it.

[Code]....

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Forms Data Controls :: How To Retrieve Detailsview Records Using Selected Dropdownlist Value

May 23, 2010

I am trying to retrieve Detailsview records filtered by dropdownlist which is populated within Detailsview template.

not sure if this is possible but,

i have three cascading dropdownlists within the detailsview and want to set the third dropdownlist value and dependant dropdownlist values according to retrieved record.

at moment they cascade values independant of what record set is retrieved in detailsview and obtain there parameter from selected dropdownlist in pagebehind.

below is select statement bound to Detailsview and itemtemplate for third Dropdownlist control

[Code].....

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Forms Data Controls :: Get Dropdownlist Parameter Value From Different Template Field In Detailsview

Mar 22, 2010

I've been struggling with trying to figure out how to do this for about 2 weeks now. I have a DetailsView with several template fields in it. The first field (Unit_Code) is a dropdownlist item where the user would select a Unit based off the Unit_Code's Unit Name. Further down I have a field named (System), system needs to get it's value from the selectedvalue or selectedindex that the user selected in the (Unit_Code) dropdownlist. I have another dropdownlist item (Component) that will need to get the selected value from System to sort on, so once I have the first Unit_Code to System figured out I should be able to figure out the System to Component part seeing as it will basically be doing the same thing.

My aspx page code is below:

[Code]....

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Forms Data Controls :: DetailsView DropDownList Do Not Find ListItems Entries?

Mar 30, 2010

I am using Visual Studio 10/ASP4 but I am sure this problem is me. I created a program and got it all working. GridView and DetailsView, edit, insert and delete all works. :-)... I have spent 4 solid days attempting to have a simple DropDownList with three items on it EDIT a record. Lots of GOOGLeing for suggestions. It just will not work. The insert dropdown works fine(thats how I created the record). I wrote a new simplified program with just the detailsview and the edititem dropdownlist. Still can't get it to work. The detailsview data has a record and the "mode" field (char(20)) has three letters "FTP" in it. The letters display on the Detailsview. I can edit fine but when I add the following drop down list the page aborted with a

"'DropmodeEdit' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value"

Yet there is only one record and it HAS "FTP" in it! The list has FTP in it? I just don't get it, why?

I added an ondatabinding routine and breakpointed it in the try/catch and found the selectedindex pointed to the correct entry and the items list had the correct entry with no spurious data or spaces. The data being passed displayed good in the detailsview, Am I correct in assuming that is bound to the dropdownlist automatically? or is there some majic that I did not get from Rob Burke?

<asp:TemplateField HeaderText="mode" SortExpression="mode" >
<EditItemTemplate>
<asp:DropDownList DataValueField="mode" DataTextField="mode" ID="DropmodeEdit" Runat="server"
OnDataBinding="mode_OnDataBinding" AppendDataBoundItems="True"

[Code]....

I have used a dropdownlist once before with a datasource instead of listitems, this should be easier?

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Forms Data Controls :: DetailsView: DropDownList Keeps Getting Original Values (user Selection Is Ignored)

Feb 17, 2011

I have EntityDataSource for DetailsView which is in Edit mode by default (showin Update, Cancel link buttons).

This datasource also has foreign key called PecID. If I change the value in textbox bound to PecID, it works fine.
Entering IDs is not very user friendly, so I add dropdownlist and new datasource.

When I select new value from dropDownList and press update the DropDownList's selection is restored to original (previous) value.
Other values in textboxes are saved as expected.

After few hours of trying to figure out what is going on, I got lucky. I figure out that it is important the order of TextBox and DropDownList in field template.

This is the working order (textbox before DropDownList)

[Code]....

This one doesn't work [Code]....

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Forms Data Controls :: Dropdownlist In Edit Template, In Detailsview. Getting "SelectedValue Does Not Exist In List?

Jun 7, 2010

I have a standard gridview and detailsview. My detailsview has some fields which are templates, with dropdownlists. The user selects a record in the gridview, then can go down to the detailsview, select Edit, and change some values (using dropdownlists).I am getting the error, "DDL has a selectedvalue which is invalid because it does not exist...." when I click Edit in the detailsview.

I know the problem has something to do with the dropdownlists not being instantiated or bound until I enter Edit mode. Is that right? In what event should I databind my dropdownlists? I've tried several things but could not get it to work. Do I have to loop through all the rows of my details view looking for the dropdownlists, or can I access them directly from some event?

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