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
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"
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.
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]
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]...
I am a vb.net programmer switching to C#.I have the following code for a console application (targeting NET20)
using System; using System.IO; using System.Data;[code]....
This is giving a compile error in the if clause of InitVars for the _dbName variable:
Error 1 An object reference is required for the non-static field, method, or property 'eScoreSwapper.Program._dbName' C:UsersSethSDocumentseScoreVersionsTrunkdotNeteScoreSwappereScoreSwapperProgram.cs 26 38 eScoreSwapper
C# does not allow you to reference private class fields unless they are declared static?
I'm trying to obtain the values using the prospective GetValue(s) methods but I don't understand the syntax of the documentation. I'm sending the correct bindings (I believe) to filter the fields, and properties that i'm interested in usually
I'm building one application with vb.net, but for my interface i need a static and dynamic view. Can someone explain me how can i do this or with what can be done?
In my work i work with a custom program.This program has hundreds of conditional statements in code " if ...X="A" and Y = "B" or Z = "C" and W = 1000 then S = 1 else S =3 ,F = 2 end if".Any time we want to make a change we have to hunt down all these conditional statements and change them accordingly.I was thinking of separating them from the code,storing them away and preferably testing them and i believe i have an idea about the syntax of how to put them in SQL tables but..the real probelm is how to "parse", "evaluate","run" pick a choice.I just want to get rid of them from the code so when someone comes and add a parameter this won't require me to hunt it down.I am "dreaming" of somekind of console where i could feed the parameters and get back the value i need.So is there any parser that can handle this kind of "dynamic" conditional statements.?
Function CalculateMaximumWeight if x = 100 and y =50 and h = 200 then .....if material = "wood" the maximumweight*1.15
Currently i only managed to implement the google map(static) into my application,but i want to replace it with a dynamic map. Is there any website or example for me to refer? I tried reading up google API website, but i still dont get it.
Can we execute any string like "Button1.Text = Value" Question arises from sql server where we can store a dynamic/static query in a string (varchar) and execute it and it will put the value to the button1.
Is it possible to dynamically change the type of the object in a class?say, I have a Filter class, that specifies a filtering condition for a list of objects of a specific ObjType
Public Class PropertyFilter Public Property ObjectType as MyObjectsTypeEnum Public Property MainObjectProperty As ??? OBJECT
i have a form that displays data from a VIEW on SQL server. Now im told various things about views, some say you can update fields via a view and others say you cant, ive searched the web and my conclusion from that is "it depends" My VIEW is of two tables in the same db:
I'm using a SQL Express 64 database on a separate server virtual machine. I've been developing my app for some time now in VS2008 on XP SP3. Using .Net 3.5 I've just come across a strange problem. If I update a checkbox from unchecked (the default) to checked, it saves OK. If I click to uncheck it, the change does not get saved. I'm using the UpdateAll method. I tried a single Update command as well, just for that table, but it was the same.
How can I use dynamic fields in LINQ in the PART OF THE where query? I mean that I want to write where x = *dynamic fields* I want to do the select query in all of the tables that are in the dataset, not on one datatable.
I have VS 2008 and am working in VB.Net forms.I have a webbrowser control where I am trying to control input fields that are dynamically created. If a text field has proper handles such as id and name tags there aren't any problems.For example, I am trying to work with twitter for posts. I know twitter has an API but I want to work with many similar systems and want to avoid the API as its case specific and I want to scale things within the VB.Net form. The login fields for twitter are easily handled, however the posting field once your logged in is just a text area with a class. There is a tagname but I have been unable to post using the tagname element.
how to update fields in an Access database through VB. What I'm supposed to do subtract the quantity of the daily orders from the inventory quantity. My textbook is a little bit vague at this point, because the only way it describes updating the DB is manually through the BindingSourceNavigator. I don't want to enter it manually, I want it to subtract the quantity from the orders table.
Public Class frmMicroland Private Sub frmMicroland_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
I have VS 2008 and am working in VB.Net forms.I have a webbrowser control where I am trying to control input fields that are dynamically created. If a text field has proper handles such as id and name tags there aren't any problems.
For example, I am trying to work with twitter for posts. I know twitter has an API but I want to work with many similar systems and want to avoid the API as its case specific and I want to scale things within the VB.Net form. The login fields for twitter are easily handled, however the posting field once your logged in is just a text area with a class. There is a tagname but I have been unable to post using the tagname element.Any examples of posting to twitter without the API ?
I'm trying to query old Access database tables and compare them with SQL Server tables.They often don't have primary keys, or they have extra fields that had some purpose in the nineties, etc., or the new tables have new fields, etc.I need to find records - based on a set of fields specified at runtime - that are in one table but not another.So, I do this kind of query all the time in SQL, when I'm comparing data in different tables:
dim fields_i_care_about as string = "field1, field2, field3" 'This kind of thing gets set by a caller, can be any number of fields, depends on the 'table dim s as string= ""
[code]....
It tells me it can't convert a Boolean - Is there any way to do this without Linq expressions? They seem far more complex than what I'm trying to do here, and they take a lot of code, and also I can't seem to find examples of Expressions where we're comparing two fields in a subquery.Is there a simpler way? I know I could do the usual EXISTS query using JOIN or IN - in this case I don't need the query to be super fast or anything. And I don't need to use a DataTable or DataSet - I can put the data in some other kind of object.
I am having issues understanding why it is that a text box that has been bound to a dataset correctly updates that dataset when the text in the box is manually changed i.e. by changing it using the keyboard but the dataset does not recognise the change when I change it in code.Am I missing something obvious? The text is changed in code when the user clicks on a command button that copies the text from another textbox on the form to this textbox.
[Code]...
As i mentioned, manually it works fine but when I use the comman button to change the text it does not recognise that any changes have occured.
Does anybody know how to edit a key in a Hybrid Dictionairy collection? I have a Hybrid dictionairy with keys in the string format, and the value in a hybrid dictionairy format.Now I want to change the name of a key without losing any items.[code]Groupname is a value that you get from a user input box. But this doesn't work very well.
I've been working on a project for my company that's completely implemented in VB6. However, we've been transitioning small parts of it over into VB.NET (v4.0). Previously, we would simply use the Package and Deployment Wizard to bundle everything up into a single setup executable, but I'm not confident that it will be enough this time. If it can, we'd like for the setup to check if the .NET framework is installed on the target machine and then install it if it is not, which I'm pretty sure Package and Deployment Wizard cannot do.
I've been reading up on INNO scripting since it seems an appropriate alternative for packaging both VB.NET and VB6 projects, but it has a lot of warnings about including the wrong or unnecessary dll files. I'm a complete noob and this doesn't instill a great deal of confidence in me. I don't want our customers to run our installer and have their computers crash as a direct result.I've been doing my own research (apologies in advance if this question has already been asked, I didn't see any relevant threads)
I'm having trouble getting controls in non active tabs to update. I have a tab control with 12 tabs. Each tab displays a custom calendar of days for each month. For each of the days I used label controls. Now the trouble im having is when I re-size the window I want the day labels in each tab to re-size accordingly. I have the re-size function written and working but for some reason it will only re-size the active tab. In order for me to have the labels on the other tabs update to the re-size I need to open each tab as to load it then it will update the controls.I've tried putting Application.DoEvents() in my re-size loop but that didn't work. How can I get the other tabs to update / redraw the controls without having to open the tabs first?
I have created a dynamic form and have added several textboxes controls giving them names such as tb1, tb2 etc. The form is create and displayed, however cannot update the value of the controls.
Private WithEvents gform As New GenerateForm The form is created using the following from click event of a button Dim x As Boolean = gform.myForm("AForm") -- Form get created and displayed x = gform.PopulateForm("a test message") -- The value is passed but not displayed Public Class GenerateForm Dim tbMsg As New TextBox() [Code] .....
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.
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
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.
