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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Mar 9, 2010
Let's say I have DropDownList ddlRooms bound to the datasource which returns list of available rooms from table tblRooms. On the other hand I have users, and their info is stored in table tblUsers. Using FormView frmUsers can be inserted, edited and updated... frmUsers is be bound to separate datasource. To each user, I would ilke to assign a room, so the value of txtUserRoom will be populated based on the selected value from ddlRooms. How can i pass the selected value of ddlRooms to txtUserRoom while keeping txtUserRoom stil bound to user datasource? Do I need two separate fileds or can i just put value of ddlRooms into datasource user?
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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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Jan 13, 2010
I really have a big problem(stuck) with two dropdownlists inside a detailsview.I have 4 detailsview : DdlRt,DdlRt2,ddlMobv1,ddlMobv2. Basically what happens here is that DdlRt2 gets populated when DdlRt is selected and ddlMobv2 gets populated when a specific value from ddlMobv1 is selected.
In code posted above the detailsview has a "Update" command and the problem is when the update command is executed the data is successfully posted to the db BUT! THE VALUES from DdlRt2 and ddlMobv2 dissapear! And I can't insert any more Items. The only Item that stays in these two dropdownlists is the default "Select Department" item which is't set in codebehind but is set in .aspx.....I can't figure what I'm doing wrong here It must be something with databinding & events.
So my question is "Why can't I insert any more items to these two dropdownlists after the "Update" command on the DetailsView is set or how can I preserve the values that are already in"?
<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataSourceID="odsRegister"
DefaultMode="Edit" Height="50px" Width="125px" > [code]....
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Apr 12, 2010
I am using VS 2008 SP1. My also have included CSS Friendly adapter [URL] in my project ( I mentioned this because my GridView Empty data template is not showing when using GridView's CCS Friendly adapter). I have a GridView and a DetailsView. When a record in GridView is selected its details information is shown in the Details View. Type of Data source I am using is ObjectDataSource. My Insert and Update methods works perfectly. It is only the Delete method that is passing null values to the underlying object delete method. My source codes for both the UI, BLL, DAL is shown below
[Code]....
My Business Object code is below :
[Code]....
My Data Access Layer Code is:
[Code]....
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Mar 8, 2010
I want to making another dropdownlist visible=false when clicking in dropdownlist on the same detailsview?
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Mar 18, 2011
I wanted to know if we can pass values from Parent page (in this case from Default.aspx page) to the user control and maintain those values on subsequent "Add/Load" of user control.
So in short, if I click the "Add" button it loads my "webusercontrol" and also I am able to pass my default.aspx dropdownlist value to this dynamically loaded user control and assign it to a "Label or Textbox" which resides in my "webusercontrol", now the problem is that the value doesn't persists! What I meant is , when I click "Add" button again the "webusercontrol" gets loaded again perfectly but now all my "Label's" in webusercontrol has the new selected value from the default.aspx dropdownlist.
So say for instance I have a Dropdownlist in Default.aspx page with Values "Apple, BlackBerry, Nokia" and initial value to be passed is "Apple", I click the "Add" button, now my "Label" inside webusercontrol has the value "Apple", perfect! Next when I click "Add" button again and select a different value to be passed this time say "BlackBerry" now I have 2 webusercontrol loaded on the page, so that means I have 2 "Labels" with different ID's, but now my first Label initially had the value "Apple" because that's what I had passed and now when I passed the value "Blackberry" both the labels of my webusercontrol has the value "BlackBerry" instead of one being "Apple" and another "BlackBerry"
Is there a way to resolve this issue? may be Dictionary List?
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Mar 18, 2010
DetailsView with DropDownList
Code]....
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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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Mar 12, 2010
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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Sep 12, 2010
How do I pass the value selected from the dropdownlist to my sql code in the back?
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Mar 12, 2010
I have a dropdownlist bound to a table and the selection filters the detailsview. After a new record is inserted using the detailsview, the new record is displayed in the detailsview and the initial record is displayed in the dropdownlist. After the insert, how can I get the dropdownlist to display the new record?
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Nov 17, 2010
How do i use drop down list in the details view? While inserting user should be able to select the "Car Name" from the drop downlist and the "Car Id" should be get inerted into database. Also while editing the appropriate Car Name should be selected in the drop down list.
How the HTML code and the Binding should look for this details view ?
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Oct 5, 2010
[Code]....
How can i get the selected item in de dropdown menu in form one, ofter the button submit in the form two is clicked?
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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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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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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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Feb 22, 2010
i want to pass values between forms. wat i did is, I have textbox, a button in form 1 and a label in form 2
1. Created a property to return text of textbox in form 1
2. in form 2 i added previouspagetype and virtual address then i tired to access the property (label.text = previouspage.propertyname).. but no success..
i tried to loop through all controls in previous page to get the value but still its not working.. i wan a simple way.. without using sessions, cookies or anything..
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Jan 30, 2010
I am building a webpage and getting the values entered in textbox from the use now I want to use the values on the next page and want to display the values overthere... I'll explain in detail:
I have a form like below:
Now I want to redirect the user to another page on button click and then use the values of this textbox.
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Feb 8, 2011
i have to pass a value in the textbox in one application to another one in run time. Two web application resides in the same Solution. how can i do it?
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Apr 11, 2010
I have a DeatilsViews bound to an ObjectDataSource, I need set some default values for Insert and Update mode, which event(s) on which control(s) will be best to handle this?
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Sep 1, 2010
I have a DetailsView that I am trying to use to pass results to an applet's parameter list but I can't figure it out.
Example:
<asp:DetailsView ID="..."....
<Fields>
<asp:boundfield Datafield="Name".../>
<asp:boundfield Datafield="Name2".../>
...etc.
<applet codebase="http:/..." ...>
param name="Name" value="value of Name from my DetailsView" />
param name="Name2" value="value of Name2 from my DetailsView" />
...etc.
I have been trying all sorts of things and viewing tutorials, etc, but I just don't seem to be able to figure this out.
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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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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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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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