Unbound DetailsView Not Displaying In ASP.NET/.NET?

Jun 21, 2011

In this project that I'm creating, I'm creating a mock-up of a page that uses a DetailView (something I saw in a blog) that seems to fit my needs. However, I don't want the data to be bound to anything.So, I added the control and then I started adding the appropriate mock-up columns to it and tried to render the control on the test page. Where the HTML that ASP.NET should generate is nothing.Here's my code (there's a 'real' DetailsView control, then a button and then a blank testing Details view control):

[Code]...

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DB/Reporting :: Displaying DataGridView Text Column In A Mixed Bound/Unbound DataGridView?

Mar 15, 2011

I have a DataGridView (dgv) on a Windows form (VB.NET) which is bound to a datatable. One of the bound columns is a an ID (Foreign Key) to another datatable. All I want to do is Hide the ID column and populate an unbound column with the Name (ParmName) for the user. I searched the foreign value in the datatable and retrieved the information. I set the Value of the cell in the Datarow. All works well, but does not display. The cell accepts the value...I can even Debug.Print the values to the console. They are there just nothing displaying in DataGridView. Nothing odd about DataGridView. Should be straight forward...

My Code
,
Dim dtParm As DataTable = MyDataSet.tblParameter
Dim dgv As DataGridView = Me.dgvResultNum_DataGrid

[code]....

.net DetailsView To Use More Than One Datasource?

Jan 5, 2012

I have a DetailsView that looks just about perfect. The only thing is, there is one field that actually gets its information from another table. It is an ID field that is linked to another table in the database and I was hoping that there was some way to get that one field in the DetailsView to pull the information from the other table.

Is there a way to maybe add a + (plus sign) next to the PicklistID and then have it show the results of the other query? (SELECT TEXT FROM PICKLIST WHERE PicklistID = @PicklistID???)

UPDATE 1/11/12: The PICKLISTID in the table PICKLIST is not unique or a primary key so I cannot reference it from the SURVEY table. Is there a way to give these 2 columns a relationship so that I can just change my SELECT statement in my DetailsView to include the PICKLISTID?

UPDATE 1/23/12: I'm still stuck on this. I am not getting how to make this work at all.

[Code]...

.net - ASP.Net Dropdownlist Within A Detailsview Not Being Set In Codebehind?

Jul 21, 2010

I have the following code in my codebehind Page_Load function that sets the default selected value of a dropdownlist in detailsview based on the name of a record returned from a sql data query.Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

[Code]...

Asp.net - Cascading DropDownList In A DetailsView

Apr 25, 2012

I have two dropdown within a DetailsView and I want to work in cascade, the idea is that an area contains various issues and these issues depend on the selected area, but I get the following error: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.

[Code]....

C# - Use Multiple Objectdatasource In Detailsview?

Nov 14, 2011

Just want to ask, can we use multiple objectdatasource in detailsview?

Example, i have 2 different tables with same fields.

Insert, Update much work properly.

Repopulating DetailsView Control?

Mar 23, 2012

I have a DetailsView1 control that is databound in many fields but also has fields that I prepopulate upon loading the page for the first time. Example being fields named ROW, FLAG, PRINTED. The user can then input data into the other fields Like FIRST NAME, LAST NAME, COMMENTS and press INSERT. I should also mention that these fields are templatefields.

<asp:TemplateFieldHeaderText="Row"SortExpression="Row"><InsertItemTemplate>
<asp:TextBoxID="TextBox1"runat="server"Text='<%#Bind("Row")
%>'></asp:TextBox>

[code]....

Then the insert of the data begins and creates a SQL record. This works as designed the first time thru.The problem begins when I try to populate the same fields for the next record using the same logic that I used the first time but the fields will not come to the screen populated the second time. What do I need to do in order to get the fields in the DataView1 to be populated after the first INSERT command has cycled thru its process?

Asp.net - Reference A Label's Text In DetailsView?

Oct 7, 2011

I'm attempting to reference the text from a label in a DetailsView in my CodeBehind, then pass it through a Stored Procedure.My DetailsView is DetailsView1, and the two fields are lblDialID & lblCallbackID. I've converted them to TemplateFields. The data is populating properly, but when I'm attempting to grab the data and pass it, I'm not getting any results.The Stored Procedure is not performing it's action, and a Response.Write on the variables does not produce any results so assumedly I'm just grabbing thin air :)

[code]...

Could this also be because I am passing a string, but the SP is taking it as an INT? This shouldn't pose a problem though?

Asp.net - Redirect Enter Press In Detailsview?

Jan 25, 2011

When using a scanner to insert into a detailsview the scanner scans and then presses enter. How do I either redirect the enter to be a tab, or just stop the enter key from triggering the insert method?

Databinding On A Property Of A UserControl In DetailsView

Mar 31, 2011

I have developped a usercontrol, but I can't seem to find how to databind on a property of the usercontrol in a detailsview.[code]

Detailsview Binding Inserting Updating

Mar 15, 2011

I have a DetailsView Control but need help with binding, updating and inserting hookup. My code below does not bind and open my DetailsView as I expect it to (either in Edit or insert mode when my page loads.[code]

Asp.net - Binding DropDownList To Detailsview Without Data Source?

Feb 23, 2012

Im trying to do bind a dropdown list to a details view but keep getting an error about the dropdown list ID field:

<asp:TemplateField HeaderText="Approval">
<ItemTemplate>
<asp:DropDownList ID="Approved" runat="server" DataValueField="Approved" SelectedValue='<%#Bind("Approved") %>'>
<asp:ListItem Text="Approved" Value="Approved" />

[code]....

The error message as follows:

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

What is the proper way to attach the value of the dropdownlist to my object so that it can be properly created in the database? Most of my searches keep telling me how to bind a dropdownlist to an object data source, but that is not what I need to do. This is a basic drop down list of 2 items that will never change.

Disable Or Hide Row/column In Detailsview When Inserting?

Aug 10, 2010

When in insert mode detailsview, there are some parameters that I would like to disable or hide. The columns are autogenerated.

Doesn't work:
DetailsView3.Rows(5).Visible = False
or

[code].....

Forms :: Get Benefit From A Listbox In A Detailsview With A Many-to-many Relationship?

Oct 29, 2009

I'm trying to design a detailsView form which contains [classes] --< [studentClasses] >-- [students] tables. There is a many to many relationship between [classes] and [students] through the third table [studentClasses]. I want to design the detailsView of [classes] such as that all [students] will be listed in a listbox but related students that take the class will be highlighted. And when I select/deselect students from the listbox and save I want the changes to be saved to respective tables.

Asp.net - GridView Row Redirect To Pre-filled DetailsView On Button Click

Oct 18, 2011

Background: I have a GridView which gets populated from an SqlDataSource via DataSourceID. The rows show some summary data from an SQL View. Upon clicking a row, I would like to take my user to another page with a DetailsView control which gets populated with the full set of values from the DB related to the row clicked. My user should be able to edit the data, download files associated with the record, and create a new record of a different type based on said data.

Error: All examples that I've found for Clickable GridView rows end up with some variation of the error Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.

[Code]...

Asp.net - Updating A Hybrid DetailsView (with Static And Dynamic Fields)?

Dec 12, 2011

I've got a DetailsView which has some static fields defined in my markup and adds some extra fields dynamically in the VB codebehind. It should be noted that the DetailsView lives in an UpdatePanel.Assume that I would like to get inventory information for a number of warehouses, but I only want to see those which have stock on hand. In addition I have some static information such as product, sku, etc.

The problem I was having was that every time I clicked the "Details" button it would just keep appending the dynamic fields to the end and never re-rendering the table. I figure I either need a conditional or to tell it to re-render somehow. I suspect this problem arises from my use of the UpdatePanel but it's important for the user experience of my customer to keep this.

'Warehouse Stock by Location
Dim stockDT As New DataTable
For Each row As DataRow In stockDT.Rows 'Add column for each Warehouse that has stock

[code]....

DetailsView - How To Populate Date From Bound Text Field

Jan 17, 2011

I'm trying to populate a date from a bound text field in a DetailsView. I keep getting a error when a DBNull is in the column. How do I avoid the DBNull when populating the text field.

My code is as follows:
<asp:TemplateField HeaderText="CBYD Clear Date">
<EditItemTemplate>
<asp:TextBox ID="CBYDExpDate" runat="server" ReadOnly="true" Text='<%# IIf(Eval("CBYDDate") is DBNull.Value,"", String.Format("{0:MM/dd/yyyy}", Eval("CBYDDate").AddDays(30)))%>' />
</EditItemTemplate> </asp:TemplateField>

Format The Date Field, By Code, In A DetailsView Grid?

Oct 13, 2011

I'm simply databinding the data (containing date values) I got with a DataReader as in the following code:

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim id As Integer = Request.QueryString("id")
'Start connection

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Loop Through DetailsView To Hide Dynamic BulletedList Items?

Feb 2, 2012

I need to be able to hide 2 options that are displayed from my dynamic bulletedlist (which is built inside of a DetailsView). Every time I try writing a loop through the BulletedList, I get an error saying that it is not a collection type, so I thought I could loop through the DetailsView to find the items I want to hide.

I can't change the SQL because this particular bulleted list gets used on 2 different pages, it's just that on one, I only need to show 2 of the 4 items that are associated with the ID.[code]...

Setting Values For Invisible Fields/Properties In DetailsView?

Mar 16, 2011

I have a DetailsView which has two fields - one that is visible, one that is not. The first the user fills out, the second I want to auto-populate. Unfortunately, I haven't been able to find a way to set the value in this second invisible field. I've tried adding code like this to the Page_Load:

If Not IsPostBack Then
DetailsView1.DefaultMode = DetailsViewMode.Insert
Dim txt1 As TextBox = DirectCast(DetailsView1.FindControl("Type"), TextBox)
txt1.Text = "administrator"
End If

But this returns an error of "Object reference not set to an instance of an object." Any ideas on how to accomplish this - either using the method above or another method?The hoped for end result is that when a new record is inserted via the DetailsView that this record will include the username (entered by the user) as well as the "type" of "administrator"

Make A DetailsView Where Only Users With Specific Roles See Some Fields As Editable?

Dec 16, 2011

For example lets say I want only admins to be able to see and edit CustomerID in details view, moderators can see this value but it is not editable, and regular users cannot even see it.

Retrieve Particular Row Of Detailsview Into Textbox On Page Load Event If Details View Defaultmode Is Readonly

Jan 9, 2011

How to retrieve the particular row of detailsview into textbox on page load event if details view defaultmode is readonly..i want to retrieve the email id from detailsview email row in textbox1 on page load event ?

Unbound DataGridView + CSV

Nov 15, 2011

First form has 1 listbox and 2 buttons. Second form has 1 datagridview and 1 button. The first form opens the csv and list the location+filename of the CSV file. When the CSV files are listed in the listbox, the user can edit the selected csv file in listbox through edit button, when edit button is pressed, the second form will show as dialog and automatically opens the CSV files in DataGridView. The user will edit some fields and save and the second form will autoclose. Now here's the problem, when i select another CSV file in the listbox and press the edit button, the previous CSV still shows, even other CSV files I select, still the previous CSV file was showing.

[Code]...

Unbound Checkboxes In DataGridView?

Jun 21, 2010

I'm working on a project where I've loaded a database into a DGV. I also have an additional unbound checkbox column for the users to select entries with. I have code in place to read the selected rows and save them into a CSV string, which is then saved in the usersettings. All this works fine.

PROBLEM AREA:
I'm trying to reverse this effect so that when the DGV loads, the checkboxes that the user selected previously are checked (and the others left unchecked). I've debugged this extensively, and using watches have confirmed that all the values in the loops are right, and the conditionals are all kicking correctly, but it seems the code I'm using to actually check the boxes doesn't work. I've searched dozens of web pages, msdn white papers, and forums, but no suggestions will check the darned box. Below is some example code.[CODE...]

In debugging, it seems the value for the Cells IS changed, but the checkbox never gets selected. The try/catch was just to pick any error messages (but there are none with this code). What am I doing wrong here?

Add Unbound ListView Data To A DB?

Aug 11, 2010

This post is related to my last post using a ListView. Once I've populated my ListView...what is the best way to add it to a SQL Server DB?

Adding Row To Unbound DataGridView?

Feb 4, 2009

I am trying to display unbound data in a DataGridView.I set up columns already design-time. I am at a loss for creating code that adds a new row using the column schema that was created in the Designer?Something like this?

dim newrow as DataGridViewRownewrow.cells.item("name").value = "text here"datagridview1.rows.add(newrow)

I get an error saying the 'name' column was not found?

Bound And Unbound Database?

Oct 1, 2009

I just want to know the right practice for database application. as of now i am creating a simple database application where the database is all bound to the control for minimal coding purpose. is it a good practice?

Moving A Row To The Top Of An Unbound Datagridview

Feb 26, 2012

I have a form created which an unbound datagridview that has three columns. "Position", "ID", "Name". The data is being added at runtime into a database upon the forms completion. (I don't want to add unnecessary rows to the database in the event a person clicks Cancel.) What I need to do is on the deletion of a row in the datagridview, search through the rows "Position" for a "HJ" value. If it's not found, change the "Position" value of the first row to be "HJ".

[Code]....

Unbound ADO Recordset To A Form?

Aug 5, 2009

I have an access project. I'm trying to figure out the proper way of using an ADODB.Recordset to control data in a subform. For example, I want the user to be able to make additions, deletions, and updates to a subform datasheet. However, if the user presses "CANCEL" from the main form, then I want the data to be replaced with the old data. Likewise, if the user presses "Save" from the main form, then I want to update the database at that time only. The only way i know to do this will update the database after every row is updated. Can I not use CancelBatch and UpdateBacth?

Unbound ComboBox Item Value?

Sep 16, 2009

when you can't make use of the item value property in an unbound combobox? I get access to it in html, so one would think you could do it in .Net.

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