In my datagriedview i have 5 column called T,C,F,S and H.I want to specify in column C that the user must enter 3 digit. For column H the maximun value should be 2000 so user should not enter more than 2000.how i can specify this condition for my datagriedview column?
View 2 RepliesIn my datagriedview i have 5 column called T,C,F,S and H.
I want to specify in column C that the user must enter 3 digit. For column H the maximun value should be 2000 so user should not enter more than 2000.
how i can specify this condition for my datagriedview column?
I want to limit and verify the textboxes data which enter by the user i want to make a class in which i pass the textfield and the methods in that class return boolean value . First method check only numbers with decimal point. second method check only A to Z or a to z with some specify charecters. In java it is very easy by the parse INt methods or use class.
View 3 RepliesHow can i limit the user to enter only certain data in a datagrid. Lets say 0 - 9 only. When the user try's to enter any other char, it should stay 0
View 5 RepliesI have a DatagridView control. I have 4 columns. What I want to do is allow the user to add rows and enter data into the grid and then click a button and save the data in the Gridview to a table. I can't find any information on how to do this
View 4 Replieshow to create an error message by message box to tell the user to enter a number only if they key in a character value?
I MEAN AFTER THEY PRESS THE CALCULATE BUTTON
Private Sub btnCalcFat_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalcFat.Click
Dim intFat As Integer
intFat = Integer.Parse(txtFat.Text)
lblResultDisplay.Text = txtFat.Text * 9
End Sub
My text box is call txtFat
how can i limit the use of a character? Specifically "." period.
View 3 RepliesI want to create a simple page that allows our Admins to select all the users in a district and then create an Email in their Default Email Program for example Outlook so they can edit it from there. However, I just found out that the Mailto has a limit on the number of characters allowed. I am exceeding this limit.
View 1 RepliesI have a textbox and I would like to limit this textbox to enter 10 digits only. Is there a way to do it?
View 3 RepliesAll programmers would want to prevent the users from overflowing input data fields. The DataGridView feature allows the programmer to specify the MaximumInputLength property for a DataGridView column at design time but it does not give the programmer access to
[code].....
Do multiline textboxes have a character limit?Someone who was using my program said that he has some textfiles that are about 50 KB and when he goes to copy/paste that data into a multiline textbox, he only gets about 31.9KB of the data.My MaxLength property says 32767, which basically matches the 31.9 KB, however, most of what I read on the internet says Multiline Textboxes can hold unlimited characters and that MaxLength is actually ignored when a textbox is in multiline mode.
View 2 RepliesI have a word (2003) document containing many Activex textboxes which are used to apply a character limit to the users input. Sometimes users want to paste data into the textbox from another source ks fine, but if they try to do it via the Edit menu then the textbox is deleted and replaced with the pasted text
View 6 RepliesI am working on an application that has a number of forms in it, doing asynchronous comms with a "radio network" over a serial port.To handle replies from the network in the appropriate form, I am using RaiseEvent. As time goes on, I seem to be needing more and more events. Is there a limit to the number of events that can be firing off at the same time?
I understand that computers can't actually do several things simultaneously, but obviously while the code triggered by one event is still running, another one might fire.
I am supposed to create a program in my VB.net class to do the following:
1. Prompt the user to enter the beginning number and the ending number.
2. Find the sum of the even numbers between these two values, inclusive.
[Code]...
We are currently using for next statements in the class. I know how to prompt for and utilize the numbers that are input etc. My problem is the EVEN numbers part. I obviously have to determine if the number is even and then use a step value of 2 from there. But not sure how to determine if number is even or odd (guessing to use mod, but totally lost).
I am wounder if anyone might have a web site or no where I can find the information so I understand how to prompt the user to enter the beginning number and the ending number. And then to find the sum of the even number. Now does anyone know what a name convention is ? I have tried to look it up on the forums but cant find nothing on it.
View 9 Replieswhen populating a data grid i keep getting a redundant row in the bottom. is there a way to lock grid rows to the number of rows in the data table?
View 1 RepliesIs it possible to add a tab character into a textblock? It's a textblock in Xaml, but i'm adding the text in code, so it has to be done there. Is there any action like "Environment.NewLine", but for the "Tab" character?
View 2 RepliesIs there any limit on number of classes that a namespace can have in .net ? Further what is the recommended number of classes that there should be in a namespace?
View 8 RepliesHow could I limit the random number range? For instance, limiting the number within the range of 1-100.
View 5 Repliesive done a bmi calculator bbut the end result has 4 or 5 decimal places when i only need one. how do i limit the number of decimal places
View 3 RepliesIs there any way/property to set BackgroundWorker to execute only x number of threads?
View 1 RepliesI'm trying to limit the number of decimal values to 3 in numbers such as .3125 but I also have numbers such as .5 which I need to leave as is.
how can I determine if a number is 4 decimal places and cut off the last number.. I don't want to round up either.. .3125 should be .312 not .313 and .5 should stay at .5 and not .500.
We have a multi-line control that we are attempting to prevent the Enter/Return key from being used to create a new line.Strangely enough, "AcceptsReturn" as False does not prevent this.So we added the following:
Private Sub txtAddr_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtAddr.KeyPress
If e.KeyChar = Microsoft.VisualBasic.ChrW(13) Then
e.Handled = True
End If
End Sub
This works fine, however one of the QA people discovered hitting Control + Enter still puts in a newline.How would we prevent this?And why does AcceptsReturn being False not work as it appears it should? What is the intended purpose of it?
I'm connection to a sql server 2005 database. I have a field called MapName which contains the following name for example:
SAMWON TEXTILE CO LTD
NO NOT USE
Notice the field contains an enter character.Now in my vb code I have the following
Dim SupplierCommand As New SqlCommand("SELECT OurID FROM [Mapping] WHERE (MapName=@SupplierName) AND (OrgId=" & CustomerId & ") AND (Active=1);", con)
SupplierCommand.Parameters.AddWithValue("@SupplierName", f_supplier)
'con.Open()
[code]....
where the @SupplierName parameter would be:
SAMWON TEXTILE CO LTD
NO NOT USE
exactly the same as my database field.But for some reason this query fails because of the enter characters.
I'm connection to a sql server 2005 database. I have a field called MapName which contains the following name for example:SAMWON TEXTILE CO LTDNO NOT USENotice the field contains an enter character.Now in my vb code I have the following
Dim SupplierCommand As New SqlCommand("SELECT OurID FROM [Mapping] WHERE (MapName=@SupplierName) AND (OrgId=" & CustomerId & ") AND (Active=1);", con)
SupplierCommand.Parameters.AddWithValue("@SupplierName", f_supplier)
[code].....
I have wrote the code for a number guessing game. But cannot for the life of me think of how to limit the amount of guesses a user can have. This is in Console Application.
Module Module1
Sub Main()
'This program plays a simple number guessing game.
Dim RandNum As Integer
Dim RandomGenerator As New System.Random
[Code] .....
I have a UI that uses datagridviews / bindingsource / datatables of typed dataset for data entry. The dataset itself is serialized to a varbinary(max) in SQL. (i.e. no tableadapter, backend schema).I would like to limit the number of rows the user can enter into some of the grids (the data is used to fill PDF forms and I don't want them entering more rows than the forms can accomodate.).I have subclassed the datagridview, added a rowlimit property and tried to manipulate the AllUsertoAddRows property
Imports System.Windows.Forms
Public Class dgv
Inherits System.Windows.Forms.DataGridView[code]......
The behavior I see is that the messagebox comes up after leaving the max row even when the user is trying to leave the grid. I can lose the messagebox and deal with notification some other way but I thought someone else may have come up with something a little more sophisticated to handle simply causing attempting to add to many records to navigate out of the grid to the next UI control.
I am a new VB programmer and am using TextBox in VB2008. Here are the problems I experienced in TextBox -
1, After I typed number in TextBox and found I need to type another number. So I used backspace key to remove it. But at this time program quit and displayed this problem: InvalidCastException was unhandled. How to solve this issue?
2, Can anybody tell me how to set number of characters are allowed to be typed in TextBox?
3, Can anybody tell me how to implement the feature that only numbers are allowed to be typed? In case letters are typed, how to tell user to re-type?
how to enter a data that i enter in textbox to a datagridview... for example i enter in the textbox is round and when i click add it will go to database... im using ms access database
View 1 RepliesThis is a VB .NET application where we are showing the output of a SQL statement in a Datagrid view. using .NET 2005.We need to get the seperators of the headers on the grid control to be the same colors as the GridColor on the form. See the picture below:We've tried looking through all of the properties of the DataGridView control, and found some interesting things that looked promising such as the DataGridViewAdvancedHeaderStyle, and DataGridViewHeaderBorderStyle, but none of it seems to allow you to change the colors on it.Does anyone know how to do this without remaking the entire thing with a GDI+ control?
View 2 Replies