C# - Applying Date Validation To Excel Cell?
Jan 27, 2012
I am working on applying date validation to excel cell(range) from VB.NET.
Private Sub DateValidExcelRule(ByVal worksheet As SpreadsheetGear.IWorksheet, ByVal DateRange As String)
Dim dt As Date = CDate("1/1/1900")
[Code].....
When I enter 4 digits whole number 7777 it is validating correctly showing message Enter Valid Date, but when I enter 5 digits 77777 it is accepting the value and converting it to 12/10/2112 value and not showing any error message.
Here all I want to do is I want to validate the cell value to any date format mm/dd/yyyy.
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Feb 15, 2012
I'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]
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Jan 16, 2012
How should I generate an Excel File with this rule?Should not be able to paste an invalid value to a validated cell from other worksheet.
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Oct 18, 2009
how can I create following thing with Visual basic?I would like my excel to check the date value in a cell and compare it to current date and if the value in the cell is older than 2 months compared to current date it would change the cell's colour.
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Aug 8, 2011
I am trying to read a date from a cell in excel into a datagrid and then compare the current date to the one in the datagrid, however vb.net converts the date (which should be of the form 03/09/2011 UK style) into a number so for instance 03/09/2011 becomes 40789
how do i keep it as a date so i can compare it to todays date?[code]...
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Jun 1, 2010
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?
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Dec 4, 2009
im trying to get the user of my program to enter their date of birth ad for the program to return how old they are in years, months and days (you are 10 years, 3 months and 23 days old) type thing and if its their birthday, to return an appropriate message.atm ive got a textbox for the days, a combo box for the month and another textbox for the year. i guess the real question is how do i use these to do the above.
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Apr 20, 2010
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.
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Oct 4, 2009
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
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Jul 12, 2009
do I focus back from a cell if its validation fails?With CellValidating event, if I set e.Cancel=True it prevents my cell from leaving.
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Sep 30, 2009
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]...
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Jun 7, 2010
I 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]....
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Oct 24, 2009
This video shows how to add validation for a textbox:[URL]..what about date ? I can't make it work for date.
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Apr 17, 2010
how can I validate given DateTime between two DateTime using vb.net?
the given DateTime must not in between the two DateTime..
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Dec 15, 2011
How to enter the date in the masked text box and how to validate it
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Feb 8, 2010
How can I ensure that my program function can only run once a time per day? I wonder how did those commercial software that did something like 30 times/days trial. How did they store the value in the sense that altering the system date and time would not prolong the trial. Currently I am thinking of validating the date through internet time since it can't be alter by user. After which, I will store the value online. However, this does not seems to be feasible if its an offline application. I wonder is the any other better way to do it?
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Jun 9, 2011
The user can only input today's date and tomorrow's date. How can I get it? Example valid dates are: Today's date: March 01, 2011 and tomorrow's date: March 02, 2011 if the dates are not valid then error.
Dim DD As String : Dim MM As String : Dim YYYY As String
Dim DDMMYYY As String
DD = Now.Day : MM = Now.Month : YYYY = Now.Year
If DD.Length = 1 Then DD = 0 & DD
If MM.Length = 1 Then MM = 0 & MM
DDMMYYY = MM & "/" & DD & "/" & YYYY
MskTxtBoxDate.Text = DDMMYYY
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Jun 24, 2011
I am attempting to import data in a batch from an Excel Worksheet to a Sql Server database. Everything works except for the one date field in the spreadsheet. The date returned is off by four years from the value in the spreadsheet. Example: The Excel sheet has a date 10/24/2010 14:18, but when I look at the column in my query, the date is 10/23/2006 2:18. This pattern, 4 years and 1 day earlier, is repeated for every row in the worksheet.
The Excel column comes to me as a custom type, formatted m/d/yyyy h:mm. I receive this from an outside vendor and having them change the column is not going to be my simplest solution.
For what it's worth, the relevent part of the query is:
Select [Date Created] From MyWorksheet
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Nov 6, 2010
I have a DataGridView where Cell_Validating is being done. I have a Cancel button on my form that allows the user to exit out of the DataGridView changes. The problem is that if a cell was currently flagged as in error, I cannot exit and remove columns from the DataGridView. I get the following error: Operation did not succeed because the program cannot commit or quit a cell value change. Is there a way to cancel the validation once the focus has been removed from the DataGridView? Here is my Cell_Validating
[Code]...
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Jun 6, 2011
How can we disable a cell of datagrid in vb.net and how to show date in datagrid cell in vb.net
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Aug 10, 2011
1. How can we disable the cells of a datagrid???2. How can we show date in a cell of datagrid???I have used this peace of code on for load event
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Apr 22, 2010
I have an excel sheet where one column consist of comma seprated hyperlinks. However, I am unable to see a way to insert more that one hyperlinks in an excel cell. Is there a workaeround this?
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Nov 30, 2010
I am using Visual studio 2008.I have an application that reformats an excel spreadsheet. One of the operations is to copy the contents of the cells from the source to the target sheet. One of the columns has numbers. In excel, if the column is not wide enough, it will display the numbers as "###". For instance, if i have a number 99 and the column is not wide enough, it displays "#" in that cell. The problem is that when I copy this cell to my target sheet, I get "#" and not 99.
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Jul 15, 2011
I want to select the Cell A3 using VB.net..
I tried doing this by:
sheet.Range("A3:A3").Select()
But this gives an exception = Select method of Range Class Failed !
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Jan 25, 2009
I'm trying to make a class that reads data from an excel file, which is going to have 3 columns and any number of rows.I made a property named Data, which is supposed to return an array of Strings of all the cells in the Excel file. My problem is that I cannot convert a Excel.Range, containing a cell, into a String. I've Bolded the part of the code that causes the error.
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Aug 25, 2011
i am importing data from Excel workbook having around 30 sheets in each book. Application works fine but after uploading few books it gives error continuously Exception from HRESULT: 0x800AC472 i used thread.sleep(1000) for each workbook into folder remove that? if these due to hyperlinks in some sheet, is any way to disable hyperlinks through code in vb.net
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Mar 16, 2010
I am trying to save an object (Class1) as string in a cell value. My issue is that from time to time I have a ComException:HRESULT: 0x8007000E (E_OUTOFMEMORY)(It is kind of random but I have not identified any particular pattern yet) when I write the value into a cell. Any ideas will be welcome
For illustration purposes:
Let Class1 be the class to be converted to an Xml string. (Notice that I removed the xml declaration at the start of the string to avoid having the preamble present- non printable
[code]....
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Dec 14, 2009
I 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].....
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May 13, 2010
How to merge cells using Cell and not Range in vb.net. I'll try this code but it doesn't work
excelSheet.Cells(1, 10).Merge()
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Jul 26, 2011
I have complex formula calculating the value of a cell and it calculates the value for me. I want to get rid of the formula from the cell and want to retain the calculated value.
I have :
Dim range As Excel.Range = getRange()
For Each cell in range
' What should do to retain the value and get rid of the formula in the cell.
Next cell
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