I have been asked to write a script to crawl through a load of folder locations and list out all the Excel spreadsheets that have connections to a set of SQL and other data sources that are due to be upgraded to a new server.
In order to do this, I need to open each file, then check the connections and return those that match the criterion set. All this happens fine until I hit any file where the end user has made a macro to run on open that refers to a non-existent file - As the C# script opens the file, the file presents the following message:
If I manually click "End", the script moves on to the next file and all is ok, but I would much rather avoid any user input and record the fact that there was a problem with the macro... How would I go about doing that?
I have set the Excel property "Disable all macros without notification" to true on the computer that will be running the script, using the same username as will run it, which I thought would prevent this kind of thing happening. I also open Excel with DisplayAlerts=false, so that isn't the problem...
I don't need to run the macro at all and would rather not..!
for context, the code snippet that opens each file looks like this:
var app = new Application
{
Visible = false,
DisplayAlerts = false,
ScreenUpdating = false
};
Workbook thisFile = null;
try
{
//send a false password to stop Excel asking for one - when it is wrong, the error will be caught.
thisFile = app.Workbooks.Open(file.FullName, ReadOnly: true, Password: "FakePassword");
foreach (WorkbookConnection connection in thisFile.Connections)
{
EDIT: It occurs to me that maybe I could do something with a timeout..? If there were some way to close the popup box from the script, that would do the job - I could just record that the timer expired in the output, which would be enough. So... alternatively is there a way to just close the box after it has popped up?
I have been able to disable startup macros when I open the workbook by holding down shift when opening the file.
I believe the interop way to handle this is to use the application AutomationSecurity property:
Excel.Application app = new Excel.Application();
app.Visible = true;
app.AutomationSecurity = Microsoft.Office.Core.MsoAutomationSecurity.msoAutomationSecurityForceDisable;
I tested this on a simple workbook that popped up a message box and put the current time in A1, and it seemed to work properly.
Excel.Workbook wb = app.Workbooks.Open("c:/cdh/foot.xlsm");
Default, the message box popped up and A1 had a value, and when I set it to disable neither happened.
Related
I have done all the work to add the data and the formulas to worksheet. Excel find errors when it opens that I do not want user to see. I do not want user to have to go to cell and right the prompt ignore errors. I do not want background error check to run when the file opens. I have checked all the errors already what is there I want to be there.
worksheet.Append(sheetFormatProperties1);
worksheet.Append(columns1);
worksheet.Append(sheetData);
worksheet.Append(mergeCells1);
worksheet.Append(conditionalFormatting1);
worksheet.Append(pageMargins1);
worksheetPart.Worksheet = worksheet;
can I set background error checking off here? or
errors.ignore = true
I cannot find the syntax to attach to either
worksheetPart.Worksheet
spreadsheetDocument.Close();
I have seen this one
<ignoredErrors>
<ignoredError sqref="A1 B2" numberStoredAsText="1"/>
</ignoredErrors>
but I do not know how to implement in my C# code? Company will not let me use EPPlus
Cindy
Hi I am creating an excel file through Openxml 2.5 SDK in c#. What i need to do is show a Welcome message in alert pop up.
I have used some ideas like SheetProtection which works when file opens but didn't get the actual solution.
Do any one have something useful. I am digging since last two days on it.
SheetProtection sheetProt = new SheetProtection()
{
Sheet = true,
Objects = true,
Scenarios = true,
Password = "Password"
};
worksheetPart1.Worksheet.InsertAfter(sheetProt, worksheetPart1.Worksheet.Descendants<SheetData>().LastOrDefault());
worksheetPart1.Worksheet.Save();
This is the code we use for password protection and i need which work like this.
I am using the C# Excel interop and I want to create a copy of a chart from one sheet but I want this copy on another sheet. I have tried the following:
Excel.ChartObject chartTemplate = (Excel.ChartObject)sheetSource.ChartObjects("chart 1");
object o = chartTemplate.Duplicate();
Excel.ChartObject chart = (Excel.ChartObject)sheetSource.ChartObjects("chart 2");
chart.Name = "Skew" + expiry.ToString("MMMyy");
range = sheetDestination.Range["T" + chartRowCoutner.ToString()];
chart.Chart.Location(Excel.XlChartLocation.xlLocationAsObject, range);
But when I try this, the last line throws an error:
An unhandled exception of type 'System.Exception' occurred in projectname.exe
Additional information: Error reading Excel file C:\ ...the file path...\template.xlsx: Value does not fall within the
expected range.
I have also tried passing a sheet in instead of a range:
chart.Chart.Location(Excel.XlChartLocation.xlLocationAsObject, sheetDestination);
but this gives the same error. I can't understand the reason for the error or how to fix it / bypass it.
I am trying to avoid bringing the clipboard into this, but even if I try copying and pasting, I can still only paste it as an image, which is really not ideal:
Excel.ChartArea chartArea = chart.ChartArea;
chartArea.Copy();
range = sheetDestination.Range["T" + chartRowCoutner.ToString()]; // Note that chart is not on the sheet sheetDestination
range.PasteSpecial(Excel.XlPasteType.xlPasteAll);
The only other solution I can think of now is to do this in VBA and then execute the macro via the interop. But surely it can be done in a clean way just using the interop without the clipboard.
You've already got the solution but instead of giving you a fish for a day I'll give you a proper answer that will help you with any C# Excel coding task.
The C# Interop Model for Excel is almost identical to the VBA Excel Model.
This means it's trivial to convert VBA recorded macros to C#. Let's try this with an exercise like moving a chart to a different sheet.
In the Developer Tab in Excel click Record Macro > right click Chart > select Move Chart > choose Object in: Sheet2 > click OK > click Stop Macro Recording.
To see the recorded Macro press Alt + F11 to bring up the VB Editor:
See in the above screenshot how VBA shows you the second parameter for Location() is Name and it's actually a string argument...
Let's convert this VBA Macro to C#:
EDIT by #Ama
The advice below is outdated, there's actually no need to worry about releasing COM objects, this is done automatically at RELEASE mode (DEBUG mode does not). See Hans Passant's answer to "Clean up Excel Interop Objects with IDisposable".
The trick here is: never use 2 dots with com objects.
Notice how I could have written:
var sheetSource = workbookWrapper.ComObject.Sheets["Sheet1"];
but that has two dots, so instead I write this:
var workbookComObject = workbookWrapper.ComObject;
var sheetSource = workbookComObject.Sheets["Sheet1"];
Ref: How do I properly clean up Excel interop objects?
You will see the AutoReleaseComObject code in the above QA that projects like VSTOContrib use.
Here is the complete code:
using Microsoft.Office.Interop.Excel;
...
var missing = Type.Missing;
using (AutoReleaseComObject<Microsoft.Office.Interop.Excel.Application> excelApplicationWrapper = new AutoReleaseComObject<Microsoft.Office.Interop.Excel.Application>(new Microsoft.Office.Interop.Excel.Application()))
{
var excelApplicationWrapperComObject = excelApplicationWrapper.ComObject;
excelApplicationWrapperComObject.Visible = true;
var excelApplicationWrapperComObjectWkBooks = excelApplicationWrapperComObject.Workbooks;
try
{
using (AutoReleaseComObject<Workbook> workbookWrapper = new AutoReleaseComObject<Workbook>(excelApplicationWrapperComObjectWkBooks.Open(#"C:\Temp\ExcelMoveChart.xlsx", false, false, missing, missing, missing, true, missing, missing, true, missing, missing, missing, missing, missing)))
{
var workbookComObject = workbookWrapper.ComObject;
Worksheet sheetSource = workbookComObject.Sheets["Sheet1"];
ChartObject chartObj = (ChartObject)sheetSource.ChartObjects("Chart 3");
Chart chart = chartObj.Chart;
chart.Location(XlChartLocation.xlLocationAsObject, "Sheet2");
ReleaseObject(chart);
ReleaseObject(chartObj);
ReleaseObject(sheetSource);
workbookComObject.Close(false);
}
}
finally
{
excelApplicationWrapperComObjectWkBooks.Close();
ReleaseObject(excelApplicationWrapperComObjectWkBooks);
excelApplicationWrapper.ComObject.Application.Quit();
excelApplicationWrapper.ComObject.Quit();
ReleaseObject(excelApplicationWrapper.ComObject.Application);
ReleaseObject(excelApplicationWrapper.ComObject);
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
}
}
private static void ReleaseObject(object obj)
{
try
{
while (System.Runtime.InteropServices.Marshal.ReleaseComObject(obj) > 0);
obj = null;
}
catch (Exception ex)
{
obj = null;
Console.WriteLine("Unable to release the Object " + ex.ToString());
}
}
I know Releasing all the Objects, using GC.Collect and not using two dots when assigning seems over the top but at least when I quit the instance of Excel the process is freed, I don't have to programmatically kill the Excel process!
Ref: Microsoft KB: Office application does not quit after automation from .NET client
From the MSDN documentation here:
https://msdn.microsoft.com/en-us/library/microsoft.office.tools.excel.chart.location.aspx
it states that for the Name parameter of type object:
Name
Type: System.Object
The name of the sheet where the chart is embedded if Where is xlLocationAsObject or the name of the new sheet if Where is xlLocationAsNewSheet.
This is somewhat misleading from the example at the bottom of the same linked page. It would appear from the example given, that you should actually pass a string of the sheet name. The pertinent line from the example is copied below (the example is for copying to a new sheet):
chart1.Location(Excel.XlChartLocation.xlLocationAsNewSheet,
"Sales");
So, for moving to an existing sheet, I would do:
chart1.Location(Excel.XlChartLocation.xlLocationAsObject,
"ExistingSheetName");
Do NOT pass a range, workbook or worksheet object. Try a string of the sheet name.
Now, from the same MSDN document page linked above, if you want to reposition the chart within the page once you have moved it to another sheet, there are additional instructions, repeated here for convenience:
If you want to move a chart to another position on a sheet, use the P:Microsoft.Office.Interop.Excel.ChartArea.Top property and P:Microsoft.Office.Interop.Excel.ChartArea.Left property of the ChartArea. You can get the ChartArea object of the Chart by using the ChartArea property.
If you're moving a chart to an existing sheet, be careful not to overlap your chart over existing data. If so, you will have to code around that separately.
This isn't the answer to the question you asked, but might be fruitful
if you're making a copy and editing it for different variations THIS IS NOT A SOLUTION
if you're truly just copying a chart then I recommend using Excel's "Camera" function instead. It basically creates a window into another sheet - you can do this programmatically and it's well documented, but a little known feature of excel I thought I'd be remiss if I didn't point out.
-E
If you are looking to make edits & the question is still open let me know that in a comment - I've done this before I just need to look back in my workbook and see exactly how I did it.
'Camera option is nice because it doesn't 'recalculate' the data - so I imagine it operates faster; a concern in large workbooks.
We have a VSTO addin for Excel. The main functionality creates reports that are used to generate workbooks. When I run a batch of reports, I get a System.AccessViolationException when using Excel.Worksheet.Copy, which also crashes Excel. Here's how I recreate it:
1) Open and run report #1 with a single parameter which creates one workbook. We close the workbook.
2) Open and run the same report with several parameters. This create 5 workbooks but crashes when creating the second, but ONLY if we have run the first single output report (see step 1). If we remove the report from step 1 from the batch, this creates all 5 workbooks without error.
I've checked to make sure that the sheet we are copying is from the workbook is open, and is not referencing the first report. In fact, we close the first one so I know that it's not. Again, this ONLY happens if we have the report in step one, which it does not access at all, so how could that be affecting a sheet from a completely different workbook?
This doesn't even finish out my try/catch so that I can get more info. It simply blows up Excel and I have to restart.
UPDATE:
Here's the basic code:
function void ReplaceSheets(Dictionary<Excel.Worksheet, IReportSheet> sheetReports)
{
List<string> oldNames = new List<string>(sheetReports.Count);
foreach (Excel.Worksheet oldSheet in sheetReports.Keys)
{
Excel.Worksheet veryHiddenSheet = null;
Excel.Worksheet newSheet = null;
try
{
string sheetName = oldSheet.Name;
veryHiddenSheet = WorkbookHelper.FindSheet(this.DocumentView, MakeHiddenSheetName(sheetName, "--VH--"));
veryHiddenSheet.Visible = Excel.XlSheetVisibility.xlSheetVisible; //Sheet has to be visible to get the copy to work correctly.
veryHiddenSheet.Copy(this.DocumentView.Sheets[1], Type.Missing);//This is where it crashes
newSheet = (Excel.Worksheet)this.DocumentView.Sheets[1]; //Get Copied sheet
/* do other stuff here*/
}
finally
{
veryHiddenSheet = null;
newSheet = null;
}
}
}
I never found a way in VSTO to "fix" this. I switched code to NetOffice, and I was able to get some better error message. Excel/Com was not releasing the memory attached to the spreadsheets. I rebuilt the reports from blank 2010 spreadsheets and it took care of it. I think it was a corrupted 2007 spreadsheet that may have occured on converting to 2010 or something like that. I recommend NetOffice over VSTO because the exception handling is far superior, and you have access to the source code, but it does have it's quirks. (You'll need to pay attention to loading order for taskpanes.)
I am trying to get the name of the workbook before it actually opens up.
((Excel.AppEvents_Event)this.Application).WorkbookOpen += new Excel.AppEvents_WorkbookOpenEventHandler(App_WorkBookOpen);
private void App_WorkBookOpen(Excel.Workbook Wb)
{
System.Windows.Forms.MessageBox.Show("Shakti " + " " + Wb.Name);
}
With the handler as shown above, Excel application shows the workbook name when it is opened completely.My intention is to do some formal check before it is actually opened up and data is shown to the user.
Is there any way or mechanism to extract the file name before the contents are loaded on to Excel and shown to the user? Any sort of help is highly appreciated.Thanks.
AFAIK you can't do that. But like I mentioned in my comment you could hide the workbook the moment it is visible. So the user will see the workbook open for a split second and then go invisible. In that split second you can read the name of the workbook and then hide the workbook.
Based on your calculations/conclusion you can then close/unhide the workbook as required.
You can hide the workbook using
Wb.Windows[1].Visible = false;
No you can't.
You anyway could create a Macro on a WorkBook Module with Open class tag as here:
Private Sub Workbook_Open()
Dim ws As Workbooks
For Each ws In ActiveWorkbook.Worksheets
MsgBox ws.Name
Next
ActiveWorkbook.Worksheets.Close
End Sub
Then call this sub via c# on opening the file, this sub runs before loading the workbook then it closes it. It has not that sense, because you'll never access the wb again...
Maybe with some tweaking here and there you could accomplish your task, but it depends to you.
Hope it helps...
Isn't Wb.name the same as the filename? In which case, since you must know the filename/location in order to open it, you can check it beforehand?