Fields On The Form Will Repeated Twice, Once For The Original Values, One For The Changed Values?
Nov 22, 2010
I was told to use a Repeater control in what I am doing which is a "Data Entry" screen with ASP.NET controls -a standard "address" like form. In cases, the fields on the form will repeated twice, once for the original values, one for the changed values. I have not used this control before but it seems like I have to bind to a database. Instead, I have an Entity object that has been obtained via a Repository. Can I bind to an object like this?
Updates to the edited item are not passing the new / updated values but rather the original values. And I can't for the life of me figure out why when I change the original value in an edit textbox and post the update the new value is not being passed. I get the original value. Perhaps fresh eyes can spot the problem. This should be super basic but apparently I'm missing something.
Here's the code for the Item and Edit templates. The code behind is below this.
I am populating data into formfields when i select checkbox in a grid view with the following code.I have 20 record set in database,Quotenumber(Main column) starts 3001 ,3002,3003..........3020.I am allowing duplicate entries meant that i have 4 recordset only on 3000 quotenumber like wise i may have 3or more record set on 3010,problem here is when i select first one of 3000(Quotenumber) it is supposed to populate the record set of first one of 3000 but only last one of 3000(quotenumber) is getting populated into form field.Can any one provide solution to this.
Code for Populating Data into formfield when you select checkbox ina grid view.
Dim indx As Integer Dim connectionString As String = "Database=xxxx;" & "Data Source=localhost;" & "User Id=root;Password=xxxx" Dim query As String = "SELECT QuoteNumber,Revision,Vendor,PartNumber FROM quotes order by QuoteNumber" Dim connection As New MySqlConnection(connectionString) Dim da As New MySqlDataAdapter(query, connection) Dim ds As New DataSet() Dim myAdapter As New MySqlDataAdapter myAdapter = New MySqlDataAdapter(query, connection) myAdapter.Fill(ds, "QUOTES") Dim dt As DataTable = New DataTable() 'DataTable Initializes a new instance of the DataTable class with no arguments. da.Fill(dt) Dim checkbox As CheckBox = CType(sender, CheckBox) checkbox.Checked = True Dim row As GridViewRow = CType(checkbox.NamingContainer, GridViewRow) Dim i As Integer For i = 0 To dt.Rows.Count - 1 Step i + 1 If (dt.Rows(i)("QuoteNumber").ToString = row.Cells(1).Text.ToString()) Then indx = i End If Next DDQuote.Text = dt.Rows(indx)("QuoteNumber").ToString() txtRev.Text = dt.Rows(indx)("Revision").ToString() DDVend.Text = dt.Rows(indx)("Vendor").ToString() txtPart.Text = dt.Rows(indx)("PartNumber").ToString()
I have a gridview that pops up when you click a link. It displays 5 columns.. if you click on the "select" link next to the record, i pass that rows values back to my form and submit the form again.. this works fine if i select a record that has all my form field values..
but if i pick a record that has some values that are empty it doesnt work.. after debugging im finding that for the fields that are blank on the screen, this is the value being passed " " which of course is not empty or null.. so my code doesnt know how to handle that.. i even tried to add .Trim() to the end of the gridview value and still getting that space being passed. How can i pass empty string instead of the for fields that dont have anything to pass?
This is my code i have for the SelectedIndexChanging event of the gridview
i used ajax control ModalPopupExtender.ModalPopupextender has panel. in that panel, text boxes and gridview placed and OK button. it has three textboxes and gridview and ok button sequentially. While edit button of gridview and after entering the some intextboxes, the text of textboxes repetedly show on textbox with camma.
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)
I am getting int values from the stored procedure. But when i bind this datasource with the gridview i am seeing the values being converted into float. i am using Text='<% # Bind("Quantity") %' I wanna that to be displayed as int, with out zero'seg: let the value be 233, when i bind that its getting displayed as 233.00
I have two textboxes on my webform txtOQty,txtShipQty and Status dropdown list having 3 options.Active,hold,Completed.When txtoqty=txtShipQty then status should changed to Completed.Can any one help me on this,thanks.
How do i change the name column text the current row when the selected index of drop down is changed? ex:first row is mudassar khan and belgium, when i change belgium i want mudassar to be replaced to a name which i fetch from database....
Have been trying to update some key fields but cannot get it working. I have the form working fine updating non key fields. I found some old threads on similar topics but none answering my question. I am using a FormView and a sqlDataSource
Question: What steps do I need to take to update key fields using a formview and a sqldatasource?
Additional Information: I have tried the following
Adding OldValuesParameterFormatString="old_{0}" to sqldatasource Adding to update parameters the old_myfield reference Adding DataKeyNames to the formview (note all key fields are in datakeynames and I only want to update the one)also when using the asp parameters do they need to be in same order as query and repeated as many time as used? Or just the same order as first referenced i.e. only defined once? Or any order?
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." 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"
I have a GridView and a linqdatasource. The GridView is editable and when the user clicks to edit a row I want to concatenate two of the fields in the linqdatasource and place it in a single textbox.
how to disabled and uncheck the checkbox values from database fields..if i have entry in my database records as :Name Seats DateSumit 1,3 11-Dec-2010Sanjeev 2,4 12-Dec-2010Manish 1,3,4 11-Dec-2010I want on page load event the default date for todays is 11-Dec-2010 then checkbox1, checkbox2, checkbox3, checkbox4 will be disabled and unchecked state for 11-Dec-2010as you see on the above database structure the seats for 11-Dec-2010 is 1,2,3,4 so the chekbox1, checkbox2, checkbox3, checkbox4 will be disabled..
I am having two hidden fields which are server controls and i set the values in the javascript function. But i want to clear them as soon as one of my code behind method gets updated. As my page is not refreshing the hidden fields are not getting cleared. But i dont want page refresh.
So how do i clear the hidden field values without refreshing the page.
above string i have displayed in front end thrgh response.write i.e by assigning string abc to viewstate. also i am tryin to genetrate above input fields from database , so i have to make it dynamic in a loop. so when a user updates any of those dynamically created fields i need to retreive those values in a loop
something like this :
field1.text , field2.text ......so on till fieldn.text ....i want to assign these values to array
like :
string[] arr1 = new string[nooffields]; arr1[i] = fieldi.text;
I have two asp.net applications webapp1 and webapp2, in each application i have a asp.net form Deafult.aspx
I want to do a form submit from Default.aspx in webapp1 and recieve the value in webapp2.
I tried to do it with simply setting action ="webapp2 location" but it is throwing the bellow error
Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.
I even added the machinekey element to web.config
but it is still showing the same error.
This is the code for webapp1 form which sends data to webapp2
i am still stcuk with my project and unabale to perform calculation on my edited gridview..
here is my problem :
i have fields (f1,f2,f3, f4...) pulled from my sql data base table. into a gridview.
the "f4" field value is based on some calculation done on f1, f2 & f3 field values..
1- i need to have the same calculation done when i edit and update f1, f2 & f3 on my gridview...
more complicated..
2 -my calculation are based on a javascript function ...
a- how can i pass the fields values to the JavaScript variables...perform the calculation....then reassign back the result varibale to the f4 field ?? ..then update my gridview with the new calculation..
currently in our application we have an ApplicationConfiguration class. It is basically just a static class with const values specifying certain application-global configuration options. Some of these values will rarely if ever change and are only put into the configuration for elegance/cleanness.
Some of these values though do need to be different between production and development. So I'm considering making this class just a wrapper over Web.config. These values are checked many times throughout our codebase. If I change these from a const to a read-only getter that reads from Web.config will this affect compiler optimizations or make our application in any way slower?
