how can VB.net validates the format of each cell on the excel file that it opens, for example, the first row should only be numeric, or cannot be null, is it possible that vb.net can check it before it inserts it in the dataset or data table?
View 4 RepliesI have use microsoft Excel Sheet ..I've fell different Values in excel sheet there is no problem..but i've fell some numeric Columns like this (00023785678).. in this columns first zero is not get it..so i went to change the column in cells format of text..
how to create in Vb.net code.. already i have fell excel sheet this method...
Dim oXL As Excel.Application
Dim oWB As Excel.Workbook
[code].....
I have an Excel sheet that looks like this:
Site ID Machine Name
43 SCO43
100 SCO44
2300 SCO50
45 SCO47
2 SCO46
VB.NET code to change Excel 2007 Column Cell Format from Text to a Number no Decimal.
Right now Column F shows values that look like
3E+13
3E+13
Manually changing it to a Number with No Decimal shows the correct value.
30000046605562
30000041582875
Of course I would like to automate this.
The 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 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!
I have a datagridview on my form.There is a column of roll no in the datagridview. I want that whenever user presses anyother key than a number key(ex:1,2,3,4....)than immediately i should get a messagebox that only numbers allowed. I have tried the below code on datagridView Cellvalidation event but its not working. how can i do such validation.
If GridView2.Item(2, GridView2.CurrentCell.RowIndex).Selected = True Then
If e.ColumnIndex = 3 Then
If Not IsNumeric(e.FormattedValue) Then
[Code].....
How do I validate the cell's value during edit? I've been using the CellEndEdit Event and using this code as its condition
View 1 RepliesI just want to know how can vb.net validate the format of a certain string for example, i have a string with 2011/13/02, and I want to check if it's format is in yyyy-dd-MM format,. how can this be done?
View 10 RepliesI'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 RepliesI 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'm trying to validate an IP address in dot decimal format e.g. 127.55.21.1
System.Net.IPAddress.TryParse(IP, Nothing)
This though returns numbers like "500" or "9" as valid. Why does it do this? Do I have to set the IP address version, if so how would I do this?
I would like to check the format of a string value (contained in a variable) before using it in further code.
- It must be 8 characters in length (no more, no less)
- It must be in the following format: 2 digits + 1 letter + 5 digits
I imagine the VB.NET code would be something along the lines of:If CStr(strMediaNum) (...not in the form [2 digits + 1 letter + 5 digits]...) Or (...datalength not equal to eight characters...) Then Exit Sub EndIf
I want to validate text taken from a textbox and want it in a specific format. I have tried masked text box but when the textbox is empty it shows something like a blank line in the text box....How can i avoid that and show the masked textbox just like a simple empty (still masked) textbox?Secondly I want data like csc-(somenumber).....Can I add some random number automatically after 'csc-' characters?
View 2 RepliesHow to validate the Date format "MM-yyyy" irrespective of the culture datetimeformat
View 2 RepliesI 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]...
I need to validate user input in some fields, where these are defining how to show time in some views.
Requirements: Time format must be expressed in Microsoft .NET way (check this MSDN Library article if you want to learn more about framework's date and time formatting: [URL]. Keep in mind I'm looking to validate the format instead of an actual time string.
For example, user may input:
HH:mm
hh:mm
ss
hh:ss
mm:ss
... and so on.
In fact, it should validate from the shortest to longest time format available. Another point is I need to do it in client-side using JavaScript. In other words, any given regular expression by you should work in browsers JavaScript regular expressions' engine. I can't use ASP.NET validation engine, or any other. Because of project's requirements, I need to avoid that.
I would like to easily validate dates in this format, e.g., 31-JUL-2010 and only this format. Any other format should be considered invalid.
View 3 RepliesI wonder how I can validate that the GPS coordinates are inserted in the right format.
Like 38.722617
What is the preferred and hopefully the corrrect way to validate a masked text box set to a short date format?
View 10 RepliesI would like to update an Excel cell using the cell name, such as "A1", instead of using the row and column, such as (3,2). I haven't been able to do it. Here is the code I used to update the cell by row and column. How would this code be updated so that it updates the cell by cell name instead?
[Code]....
i try to make a regular expression format to validate phone number at this format: (555) 555-5555 Dim IsPhoneValid As New System.Text.RegularExpressions.Regex("^/([0-9]{3}/)*[0-9]{3}*[0-9]{4}$")
View 3 RepliesIn Visual studio 2005 using VB, I've just started using a masked textbox to input time in the 24hr format.In the Input dialog box , I've set the mask to : Time(European/Military) and checked the : Use validating Type box.[code]Problem: The user can enter numbers which do not match the time format.Example:25:75 or 23:66 , etcI would just like to restrict user input to the numbers required for the 24hr format only.Also, if anyone can provide me with a link to some working examples of masked textboxes.
View 6 RepliesI have this code that will import the excel sheet to the datatable then inserts it in the database, but I have this problem.I have set the HDR to yes so that the first row will be considered as its header, but the problem now is that if the first row is null, the datatable will automatically named it's header as f1,f2 and so on. how can I set the header as null if the first row is null? so I can validate it afterwards
View 3 RepliesI am trying to create double and number format cells in excel using NPOI library. I used code like Dim cell As HSSFCell = row.CreateCell(j) cell.SetCellValue(Double.Parse(dr(col).ToString)) In excel numbers are aligning right but when I check format it is showing in "General" then I changed my code to like below
[Code]...
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.
How to format that cell ?
I am trying to export cells in a DGV that has time formatting. The data for the cells is stored in an Access database that also is set for date and time. My problem is when I export the DGV to excel, the date and time show up as pound symbols until i click on the cell, and it adds the current date with the time even though in the app I only put in the time. All I want is the time to show up in the Excel cells and not to have it show up as pound signs.
[Code]...
I want to use conditional cell format. That condition is when A and B cell is equal than B cell font color will be gray. I write a code in datagridview cellformation
If Me.CMDgvName.Columns(e.ColumnIndex).Name = "drPublisherWeb" Then
If e.Value.ToString.Trim.ToUpper = CMDgvName.Rows(e.RowIndex).Cells("drPublisher").Value.ToString.Trim.ToUpper Then
[Code]....
i can't write the code for only cell font color will be gray.
I'm using vb.net 2003 and I've tried to generate a report in Excel using POI, but I have a problem when the records is above 2000, cell formats has been missing or corrupted for the next 2000 and above records. And when I'm opening the generated report and It shows a message of "To many different cell formats" and the next message is "Excel encountered an error and had to remove some formatting to avoid corrupting of workbook. Please re-check you formatting carefully." Can anyone help me on how to fix it or can anyone else have an another idea for me to format all does cell whether it's 2000 records an above. [code]
View 2 RepliesI'm adding a textbox to my grid as follows and formating it as a date.But reagrdless it doesn't seem to want to format it as a date.Further how would I prevent, for just a single column, the user from entering anything but numbers and "/"'s?[code]
View 5 Replies