Im using VB.NET 2008 and SQL Server 2005.Im using the table .The table look like the following:[code]....
I m trying to get the value of a cell in a variable... Let's say I want the "Firstname" of the employee who's ID is "2" in the variable "oVar". How can?I do that? ...
Dim oVar as String
oVar = SELECT Firstname FROM tblEmployees WHERE ID='2'
If a column contains null dbnull value in sql server database then how can i replace it with "N/A" string when i view the database table in datagridview
View 2 RepliesAfter trying to search this forum and looking in 2 different VB 2010 books
I still don't know how to read a DataGridView cell into a variable.
I think the code should look something like this[code]...
Does a variable create a memory cell, or is it actually the memory cell, for example: Dim Answer As DialogResult
This is the explanation I have written for that line of "This line of code uses a Dim (Dimension) statement to declare a variable called Answer.
This variable creates an object to store the users answer to a dialog result." and this is the explanation that my friend said it was:
"This line of code uses a Dim (Dimension) statement to declare a variable called DialogResult. This variable is a memory cell to store the users answer to the dialog result."
I am reading in a mdb table into a datagrid, and with a sql command I am able to pull up a row, but now I am trying to figure out how to get a particuliar "cell" value into a variable, how do I do that? Lets say I want length 87 how would I assign that to say this:
Dim x As Integer = (??Length 87??)
I get a 'Conversion from type DBNull to String is not valid' error when I proceed to insert the row with a null cell value from my program to MS Sql Server even if the column is already set to accept null values in the database. How do I solve this? FYI I'm using an unbound datagrid, and I get all the screen values during runtime.
Property SerialNo()
Get
Return strSerialNo [code]...
I am attempting to copy the value of the TimeStamp in cell A6 which has the NOW() formula into cell A5 Based on a change in Cell A4. The catch is I don't want it to update every time the sheet is recalculated due to updating links in other cells on the sheet. ONLY when Cell A4 Changes. What do I do?
View 2 RepliesI'm new in VB and I have a problem: after clicking on button, program connects to [URL] which has this text
[Code]...
I'm writing a program that will be based off of TCP communications with a server. The user would click a button, which would send data through TCP Client to the TCP Listener on another computer. The TCP Listener sends back a response, and the TCP client is receiving it. Right now I have the response from the server showing up in the immediate window, which is good. I want the response from the server to determine what action the client program will take next.
How do I use the server's response variable in a different class? I need to use the response from the server in an if-then-else statement to say "if the server response is 001, then execute this code. else, if the response is 002, then execute this code."
I have a client/server program. There is a variable called readData that takes returndata and places it there. My question is, why can't I access this variable directly, for instance, varC = readData and then try to access a piece of it i.e. textbox1.text = varC(2), I get an error "object reference not set to instance of an object". Why is this happening? It is because the readData is a networking 'component'? How do I get around this? I can post more code from the server app if needed.
[Code]...
I have a Server side variable by the following code
Dim mgps As New Text.StringBuilder
Public ReadOnly Property GPS() As String
Get
Return mgps.ToString
End Get
[Code]...
I have a Server side variable by the following code
Dim mgps As New Text.StringBuilder
Public ReadOnly Property GPS() As String
Get[code]..........
and replace the store_locations with GPS but my map become empty.
Code of my web page.I made changes according to ur suggestions but title is invisible or not displaying what has missed by me [code]...
View 1 Repliesin VB.NET DGVedit mode, after press ENTER to move the active cell into the desired cell, notdirectly move to the next line, how is it?
View 2 RepliesThe problem is that if you never enter anything into a cell for a new row then that cell is never validated. This is a problem because I have columns that should not be null. I am doing the check in the row level validation and storing the information about which cells are empty that should not be empty. The row level validation works fine and the row level validation error indicator goes on,(red exclamation mark at the beginning of the row) but I also need a visual indicator on the individual cells that are in error.
I am thinking that setting the HasError property for the cells that are in error should cause them to display n error style (the default red border). Is there a way to this this either from XAML (perferably) or from code?Alternatively I could cause those cells to re-validate when the row editing is finished. Does anyone know how to do this?
I need to display the column header and cell value of the clicked cell in the data grid. For example if I click Argentina from the country column, the text box will display country = Argentina.So far the code I have is, please help me figure out the code for displaying the information in the text box
Private
Sub
DataGridView1_CellClick(ByVal
sender As
[code]....
I'm attempting to copy cells, one at a time, from an Excel 2003 (or 2007) spreadsheet to a Word 2003 (or 2007) table. I'd like the code to be version-agnostic, and so am using late binding. The formatting of the contents of the Excel cell, such as color, underline, strike-through, needs to be preserved. My approach is to use a Word doc as a template. It has a table at the top which I can copy to the end of the doc, add rows as needed, and fill in the word table cells with the data from the excel spreadsheet. Unfortunately, all the formatting disappears. All I get is the text itself.
View 2 RepliesHave this code so that when a checkbox in a column of my datagridview is checked, then the corresponding cell in column 2 (of the same row the check box is in) will turn blue with font color white.
[code]...
I'd also like to add a line so that as well as the cell going blue, the bottom border of the cell disappears, so cellborderstyle = none.
I wanted to implement the use of Enter key when entering data and moving from cell to cell. How am i going to implement that?
For example:
Text Box 1: Date: 02/02/2009
Text Box 2: Name:
then after entering the date on the text box i wanted to move to Text Box 2using only the Enter key.
I have a DataGridView with several columns. One column is a TextBox column named "Status". This column can only show one of three values: 'Final', 'Ready', or 'No Reportable'. I want to have some code that would turn the TextBox cell into a ComboBox cell when the user left-clicks on the cell to allow the user to choose one of these three options. When the user clicks elsewhere or the cell loses focus I want the cell to change back to a TextBox cell.
Here is what I have so far, but the code throws an exception indicated below Plus, I don't think the code would remove the combobox when the cell loses focus.
Exception: "Provided cell does not belong to this DataGridView control."
Private Sub dgvCalculatedResults_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles dgvCalculatedResults.MouseDown
Dim ht As DataGridView.HitTestInfo = Me.dgvCalculatedResults.HitTest(e.X, e.Y)
[Code].....
I have user form that copies data form on excel sheet to anther after the paste takes place.I need to perform a cleanup process. If the cell Value = N/A or the Cell formating is Strike thruIt need to1) Cut the Entire row 2) Shift the Row up3) Then paste the cut row into an anther sheet in the workbook
View 4 RepliesI have a datagrid that will be accepting data from an external measuring device via the serial port. The grid is also open to editing records as well. Part of the process of making this grid user friendly is to intercept the "enter" key and move to the next cell until there is a value in the cell. This is only for some cells, other cells can be blank. I have worked out how to intercept the "enter" key from another post on this forum. Here is the code:
[Code]...
I'm using something call ultragrid in my program.The program works as a mini-record keeping area (Like any datagrid, really). Well, I am adding a history to it and it allows the user to see the last 50 records searched. They get a grid showing the records. This, thus far, works perfectly What I want to do is this: I want to select a record (A cell) in the column 'Dog and have the text of that cell appear in a textbox. This is what I've tried with no success.
HTML
Private Sub HistoryTextBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles HistoryTextBox.TextChanged
If ugHistoryButton.ActiveRow.Cells("Dog").Selected = True Then
[code]....
It just doesn't seem to want to transfer over when I select the cell in the 'Dog' column.
I am trying to test certain cell values to see if they contain subtrings of a certain format at the END of the cell sting value.E.G.I have cells with the values...
324f5
346-ssth
4565-Q1-09
dsfsd46
[code].....
I want to run a macro that searches through the cells and tests to see if they have a substring sitting at the end of the value that is in the format "-Q[number]-[number][number]" OR "-[3 LETTER MONTH ABBREVIATION][number]-[number][number]" OR "-[3 LETTER MONTH ABBREVIATION][number][number]-[number][number]"and then if the test is true, the cell color is changed to RED.So if I ran the macro on the example I gave above, it would turn the cells with the following values red:
4565-Q1-09
454354-FEB2-09
546-5-MAR03-09
I can do all the VB side of things but I don't know Regex but know it would help. I'm in a bit of a rush to finish this job for work because I finish working here in 2 days and need to get it done before I leave!
DGV.. if user edits cell make cell bold
Is there a way to check if the cell has been changed via DGV without calling getchanges() on DS on every cell edited?
when user enters a cell and changes a value i would like it to change font to bold for that cell.
Is it possible to disable cursor moving from cell to cell in datagridview?
View 5 RepliesDatagridview . in cell validated handler and I have the column,row for the cell that I just checked on. If the cell contents are bad, I want to force the cell value to be blank and focus back on that particular cell and try again.The code i've tried simply moves to the next cell in the grid instead of staying where I want it to be. Surely there is a command to focus and put the 'cursor' back in a particular cell.Some sample code I'm working with:
MsgBox(
"Invalid Job#, Correct or DIE!")
JLgrid.Item(0, Row).Value =
[code]....
I have and form that Copies form on excel sheet to anther after the Paste takes place I need to perform a cleanup process. I need to cut the entire row, Shift Rows up, and paste it in anther sheet in the workbook if the value is N/A or the formatting is strike Thur. I am having trouble figuring out the code here is where I got to.
'Declared Stuff
Dim wbTemplateSAS As Excel.Workbook
Dim rangevalue As String = LastRowtx.Text - FirstRowtx.Text + 9
[Code]...
using code, how can i goto to cell which row = 3 and column is 4?
View 7 RepliesI'm using a matrix DataTable bound to a DataGrid. Cell edits aren't committed to the DataTable until a different row is clicked. How can I commit changes when any cell gets focus?
View 1 Replies
