Possible Duplicate: DataGridView - Validating for Cell?i have a requirement. i dont know how to get the data from the datagrid after the user entered data in textboxcolumn. i also want to validate the entered text in datagrid cell.
View 2 RepliesI am trying to show message when user didn't enter any data in datagrid and click on save button it should display message please enter the required fields but I am using this code for this purpose.
For Each cell As DataGridViewCell In DataGridView1.Rows(DataGridView1.RowCount - 1).Cells
If cell.Value Is Nothing OrElse cell.Value.ToString = String.Empty Then
MessageBox.Show("Please Enter the Required Field(s)!", "ITPCHR", MessageBoxButtons.OK, MessageBoxIcon.Stop)
Exit Sub
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When I click on save button without entering data it give me message please enter the required fields but when I enter the data in datagrid it didn't save data and gives same message please enter the required fields.
i just write code for application, in which data is get by user and entered data is to print in a particular format?give me a code for vb.net button by which after click on it will print entered data?
View 1 RepliesI'm having this weird problem with my windows application, I have fields for entering data into an underlying access database, my problem is after clicking the submit button upon entering the first data it shows neatly in the datagrid but subsequent data entered repeats what was initially entered into the datagrid.
Private Sub BtnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnSubmit.Click
'Sets Null Fields to 0
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Ok so I have designed a program to figure out commissions for phone sales at my company. Since the devices we sell and their associated prices change over time, I had to make that data within my program dynamic. I have a form within my program (frmprice) that has 160 textboxes - 80 for the devices and 80 for the associated prices. Now I hard coded the .text members with default values for our current stock of phones and prices.
I also added code so whenever that form with the phones and prices (frmprice) closes it saves any changes that have been made to either the phones or prices and when the form loads it overwrites the default data with any data that the user had entered at last run.
HERE is my logic problem. At the very first run the program is overwriting the default hard coded values with "" because no user data has ever been entered before. So when the form with the prices loads, it passes the user entered data from last run which is null because it has never run before. If I test to see if default value <> the user entered data before it executes the code to pass the user entered values it will always test to be true because the user entered data is null at first run. If I test to see if the default value is = to the user data it will always at first run test to be false because there is no user data yet.
HOWEVER once the user entered data is initialized (anytime after the first run) I need the program to pass the user data from the previous runs back in. Just NOT at the first run. Here is the code i am using: (in the code below the variables ending in "val" are the ones that are of the type string and are saved in the application settings) The frmprice_Load Event:
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I've got a (hopefully) quick question. I've got textboxes attached to a binding source on one of my forms, and when I add, then clear, the data for the next entry to be added a small problem arises. If the user has previously entered something into, for example, Textbox3 and the user does not have the data for Textbox3 the user cannot move to the next field unless something is entered into the box.
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We use a database to create Data Collection forms with dynamic items
I used this code to generate labels and textboxes from a table in database (when the user hits the button "load CRF")
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click[code]...
I wish to build and display a simple diagram that is built from data entered by the user. Because I can't post a picture of the types of diagrams here I'll use the following example. Image a picture of a house as a child might draw it a large square, with a triangle for a roof, a rectangle for a door, and two smaller squares for windows. Now I want to build an application that lets the user enter data and change that drawing according. For example, by entering the length and height of the house the size changes, change the number of windows, size of the door or height of the roof.
Now this may seem like a useless application but keep in mind the house is just an example the real purpose is different but should be as simply drawn. I'm looking for suggestions on make this work. Should I use a paint? or is something like this better done with a tie into the Visio references?
i have a problem with the sales transaction. i need to show all the product purchase and i need to show it on the data grid but everytime i input a product it keeps on replacing the data i entered. need code for adding data in the rows of data grid.
View 1 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'm trying to figure out a way to validate the user data entered:
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This is in MVC3, VB.net. I'm looking for an easy way to validate a users input data into the editorfor field.
i want to binding excel data to a datagrid without no header, just the data.for example :my excel files consist of 3x3 matriks data in 3x3 excel cell like this
1 2 3
4 5 6
7 8 9
and i want to show all this data on data grid i have tried with some code like this
Dim MyCommand As System.Data.OleDb.OleDbDataAdapter
Dim ds As New DataSet
MyConnection = New System.Data.OleDb.OleDbConnection("provider=Microsoft.Jet.OLEDB.4.0; " & _
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but the first row of that data ( 1 2 3 ) is not shown up in the datagrid, just the 2nd and the 3rd row that shown up in datagrid?
have made a connection to a database through VB and i was able to extract a single value from a record and display it in a datagrid table, but i don't know how to display that value in a textbox. i tried doing e.g. txtABC.text = datagrid123.item but it seems that the values cannot be converted between the datagrid and the textbox.
View 2 RepliesHow can I ensure that a user enters data in one text box before being allowed to move on to the next text box Example I have four text boxes the user can enter a grade in. I want to lock the other three box until the user has entered a number in text box 1. Once a valid number has been entered in text box 1, that releases or enables text box 2. Once a valid number has been entered in text box 2, that releases or enables text box 3. And once a valid number is entered in text box 3, that releases or enables text box 4.
View 5 RepliesI have created a program that solves the right-angled triangle by just needing to input two known quantities. I have adapted this code from some I found on another website, it never actually worked, so I spent two weeks figuring out how to get it to work. I have finally succeeded, what I would like to do is display a message box if the user has not entered the required two inputs and presses the 'Calculate' button (see image). I just want it to say "At least two known quantities are required".I have some code that clears all the text boxes so you can enter new data, but I have tried countless times to find a way of coding so the message box appears.
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Please take a look at the code below. I was told by the individual that developed itoriginally that the code only adds the rows of data the user entered. In other words,there 5 rows of textboxes. user can enter data into one row or into all 5 rows. If the user enters data into one row of textbox, that's what gets inserted into the db.I made some minor change to the code so that users can tell when a payment is made by check or cash payment.Since I made that change, whether a user enters data into one row or all 5 rows, all 5 rows get inserted into the db.How can I modify this code to ensure only rows entered get inserted?
For x = 1 To 5 Step 1
dedval = obr.FindControl("ded" & CStr(x))
chckvalflag = obr.FindControl("chck" & CStr(x))
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Having issues getting my summary textbox, and tool strip to go from disable to enabled after the data is entered
View 17 Repliesi have written my code to to insert data that has been entered into my textboxes n my form into my access database. i am gettin an error message saying: OLEDBEXEPTION OCCURED...Syntax error in INSERT INTO statement.
i was wondering if someone could look over my code and tell me where im going wrong
the code is written for when the button on the form is pressed.
my code is...
OleDbInsertCommand1 = New System.Data.OleDb.OleDbCommand
OleDbConnection1 = New System.Data.OleDb.OleDbConnection
OleDbInsertCommand1.CommandText = "INSERT INTO Admin,(Employee_Forename,
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I made my first app today. The point is to enter a password and then get into a screen that displays info, and you can edit it by typing in the text box. Is it possible to save the data typed?
View 2 RepliesI have an application in which I want to update only if new data is entered. If no data is entered, then it doesnot update.Any way I can check in the database? If it doesn't update, then it will not give a message that the records updated.
View 3 Repliescheck if the entered data is in the same row inside the table using .net?
View 1 RepliesHow to save a data i entered in vb form into .txt or acces db, for example i have a form, and there is some text box in that form, then i write a text in that TextBox then i save all into txt file or Access DB, and i can open or load that file into my aplication. i use SaveFileDialog but how to make i can chose a file type to save it?
View 8 RepliesI was wondering if there is a button that you can add that will save any data entered into my data grid view?
View 3 RepliesI'm just trying to create a graph where the user can input data into textboxes and then plot the data. I am attempting to use Zedgraph, but open to other suggestions. The program below creates a plot, but it won't update when the textboxes are updated.
Imports ZedGraph
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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I placed a datagrid in my form which l retrive data from my sql. i am using oledb connection. if i run the form i can retrive the data but i am not getting the data in the grid at first ,there is a "+" sign, i have to clik that then it shows the table name and after clicking the table name i can view the data displays in the grid..
View 1 RepliesI have a program that simply checks if the account number and pass word match. And if not it allows you to create it. But i have no idea on how to create something that will hold the data and will allow the user to add and remove sets of data.
View 1 RepliesI am working on a project and I want to have a list box with a custom data template populate with user data. My question is, when I click on an item in the list box, how can I tell what item I selected? Basically, if I select "kevin", I want to display his data. If I select Dave, I want to display his data. I do not know how to get the data our after it is bound...
View 4 RepliesBackground: I have an web form that autpostbacks a list of bundles to a listbox based on the carriers selected. When Postback happens, all user entered data is cleared. How do I prevent the AutoPostback function from clearing entered data from the forms? [code]
View 1 RepliesWe've got a bunch of forms that are using data binding through a binding source control to get text from a textbox into a dataset and then into a database. The problem is that we need to be able to strip trailing spaces before saving the data.
Is there an easy way of doing this without having to go through the dataset manually trimming every string? Ideally everything should update to keep things consistent (e.g. no trailing spaces in the database, dataset or textbox).
I am trying to get valid data entered in a Windows Form.I simply used bunch of IF and ElseIF statements to set the conditions.
1. Because the field can only accept letters, I need to filter out characters. Eg: !@#$, stuff like that.
2. I need to apply a loop so that the user is prompted to re-enter the data or to have the error message repeat. Right now the error message display once and that's it.I understand the Do Until Loop but my book shows example only on numbers.
Public Class validDataForm
Private Sub validDataForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
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