VS 2008 Dgv "new" Row - All Columns Editable While Rest Of Grid Readonly
Apr 15, 2009
I have a datagridview with 5 columns on it. It has two "views" according to whether the user is logged in or not. If they aren't logged in all 5 columns are readonly. If they are logged in 2 of those columns become usable but the other 3 are still readonly.
My issue is "how do I allow someone to add a row to the grid without turning off my readonly columns"?
I know that I could change the readonly status for the columns and then change it back after I add the row...but I was hoping for something easier. Or at least only to unlock the "new" row area, but leave the rest alone.
Is it possible to set readonly on dgv cells as well? Or just on the columns and grid object?
we display a decimal(11.25) value in the grid . When we try to edit that cell its displaying only (11).Its not showing the decimal value when we try to edit that cell.
I am creating a windows application for my company. in the master file i will enter the number of items we are getting from the customer. and in the next page i have to enter the details of each item. For that i have created a datagrid which has one autogenerate number field and the remaining fields must be editable. So that when i enter all the values in the datagrid, it has to go and save in the data base.
I am working on a windows application using microsoft visual studio 2003 editor in vb.net
In Page1 RMNNo will be generated automatically and it will ask the user to enter the number of items in Page2. So in next form, all the item details i want to enter. But i cant display the second screen multiple times, I decided to create a table at run time, the number of rows will change depending on the number of items entered by the user. But in the table we may have to get some of the values from the database and display as a combo box so that the user can select from the list. So i decided to use the editable data grid.
I need to display an two-column editable grid not bound to a database. I took a look at ListView with Mode=Details, but it appears that only cells in the first column can be edited. I then took a look at DataGridView, and am having two issues:
1. When editing a cell, it adds a new row: [url] How can I prevent this?
2. I don't like the grey background and would like the grid to fill the whole space, right and below.
BTW, if you know of a good tutorial on using the DataGridView unbound, I'm interested. [Code]
I have a custom collection, lets says COL, that derives from ObjectModel.Collection. I have my own collection editor that works fine when a property, of type COL, is Read and Write enabled. However, if I change the property to ReadOnly, the open editor button stops showing in the property grid. As a test, I override my custom editor with the CollectionEditor, and that worked fine. So, my question is, what check is the property grid making, that CollectionEditor passes but my collection editor fails?
I am stucked at the situation where I need to disable few columns of a each row ,except newly added row.That is I have 10 columns in grid and I want first three columns that are binded from the rows coming from db as disabled or read-only, rest are editable. if I add new row then all columns of new row must be enabled until and unless it is saved.I dont have any DataKey or Primary key for my existing row or new row. I have to check for some boolean values like IsNewRow. [code] but the problem is that if i click on disabled/readonly rows then newly added rows also gets disabled., which i dont want
I have a class that has a readonly collection property - Its a list of extender providers that have been applied to the control.I've implemented a simple property descriptor for the collection so that the property can be expanded in the property grid to examine each entry.
When I select an extender provider and set it to false, I remove it from the collection. The GetProperties method of the type converter is requeried and the property grid refreshes.However, when I set an extender provider to true, and thus add it to the collection, GetProperties is not requeried.
Somehow, the property grid is making a distinction between adding to and removing from the collection. Or alternativly, its refreshing when an extender provider is added, but not when one is removed.
I have students who will be enrolled into a course. The student grid view has many columns like client_no, student_name, date_of_birth, address, etc. There are over 100000 students so I will need to filter the student grid view to find the correct student to enroll in the course. Once they are found, the user selects them and somehow moves them to the enrolled grid view. If a student drops out then they would be removed from the enrolled grid view.This process needs to be easy to understand and use. Are there any examples available or other suggestions on how to do this?
Now what i want is that when user select some option from the combobox then some of the cells only in the same row get filled automatically according to the selected option.
like if there are 4 fields in grid : emp_id , name , age , salary
and id column is of type combobox then on selecting the particular emp_id from the list , its coressponding name get displayed in the same row and then user can enter the other fields.similarlly when the emp_id get selected in the 2nd row of grid then 2nd row column "name" get filled.
This has worked fine, until I set the "Enable XP visual styles" on the project properties page. With this set, the colors dissapear from the header (although they still show up correctly in the grid). If I turn the flag off, the header colors are back to normal.
I am using a PropertyGrid control to edit my class properties and I am trying to set certain properties read-only depending on other property settings.This is the code of my class:
Imports System.ComponentModel Imports System.Reflection Public Class PropertyClass[code].....
This is the code I am using to edit the values:
Dim c As New PropertyClass PropertyGrid1.SelectedObject = c
The problem is that when I set SomeProperty to True, nothing happens and when I then set it to False again it sets all properties Read-Only.
Option Strict disallows Late Binding for behind form code dynamic building grid columns VS2008 VB.NET ASP.NET 3.5 bf.DataField = strDataField(ForCount)
When I debug my code I notice that some of th code below is skipped when an integer is not filled in in the DB.Example:When the value of the piece of code in bold (Aanspreektitel_ID) is null in the db the code skippes the rest of the code blok and thus not filling the values on my form.
I have a program that someone else designed the form on and sent to me to populate the code. I am not sure what could have been done to cause this problem, hoping for a quick oversight on my part. There are several fields of textboxes that the user enters numbers in. Normal behavior for textboxes is when you tab to them the current contents are highlighted. On one of these textbox fields, and only that one set of textboxes, the contents are highlighted like normal at first, but after the user edits the content of the textbox, if you tab to it again it will go directly into edit mode instead of highlighting the contents. Each textbox in the field does this individually, so if you just edit one, all the rest will continue to highlight contents until you edit them as well. It appears you don't actually have to change the value of the textbox, just entering edit mode and getting a blinking cursor is enough. I cannot find a difference in the properties of these textboxes compared to the rest.
i have datagridview populated with stock code, name and description.And i have docked my datagridview to the bottom. so whenever the form is resized, the bottom section will be occupied completely with the datagridview.But i want to display one extra empty column and multiple empty rows to completely fill in the datagridview.The extra empty column width will be adjusted to the right end side of datagridview.And the no of empty rows will be generated based on how many is required to fill up to the bottomSo that i can create datagridview with full column and row even though some columns or rows are empty.
What ever happened to the readonly method in the ComboBox? So i thought if MS did not have that option let me code around it. So i made a code herethat checks if the user inputs something else then what i want him to input.If it something else is found it returns the text back to "Hours(s)"But why do i get this error?
I have the following Imports System Imports System.Collections.Generic Imports System.Drawing Imports System.Linq Imports System.Windows.Forms [Code] .....
But I am getting this error: Error1Class 'DemoPlugInTwo' must implement 'ReadOnly Property name() As String' for interface 'Interfaces.IPlugins'. Implementing property must have matching 'ReadOnly' or 'WriteOnly' specifiers.C:Documents and SettingsOwnerMy DocumentsVisual Studio 2008ProjectsDemoPlugInThreeDemoPlugInThreeDemoPlugInThree.vb1420DemoPlugInThree I am getting similar errors for the other property and method. I have them set as read only.
I have a public readonly variable in a module, but when I try to set it in my form load event for the first time I get 'ReadOnly' variable cannot be the target of an assignment. It is my understanding that a ReadOnly variable can only be set once and after that you would get an error when setting it.
I'm working on rewriting something in VB that was previously in C# and while I was doing so, I came across a "dilemna." I can have a ReadOnly Property:
Public ReadOnly Property MaximumIndenture() Get Try 'If the connection is closed, open it.'
[code]....
They both essentially do the same thing, but I'm not sure which would be more accepted in the community.
It appears that when IO.Directory.GetFiles tries to read a folder that it doesn't have access to it throws an exception & stops reading. Is there any way to have skip those folders & continue reading the rest of the folders?
the code bellow try to make the same effect that textbox1.readonly = True in an combobox...the code to do this are in a form class and because i never had work with class i don't knoe the way to call this class..
Option Strict Off Public Class ComboBoxReadOnly Inherits System.Windows.Forms.ComboBox
I'm making a database app. I've finish the search, add new, and add function. What I'm trying to do is to expand the functionality of the add new item function.
winforms .net 3.5 Ultrawingrid 9.2 In my subclass of Ultrawingrid.Ultragrid :
[Code]...
This works fine. But when the grid is dropped on a TabControl tabpage, the ctrl-tab looks very different to the sub above. e.keycode is seen as controlkey {17} I realize that by default cntrl-Tab moves between tabpages. I need to override this behavior. My thought is I probably need a subclass of the tabControl which will pass the keycombo through just as the form does but I confess to being clueless as to how to accomplish that. I tried to override the onkeydown of a tabcontrol subclass and just issuing a return and not and base call to onkeydown if the ctrl-tab combo was pressed but it seemed to see the e.keycode as controlkey as well.
