Problem to the line

Always please post the text of error messages. Searches will not be able to find the text of a picture, especially if it is on another site.

In this case, the picture shows something in a far-eastern script, which is no help at all to most of us, so could you try to translate, please? Google has an on-line translator which you might be able to use.

Here is the error I've got
輸入字串格式不正確

I don't even see any code behind those links..

I got the error as shown in above.

As Graham wrote: Many experts are from the Western world.

Your links only show


Graham also asked for a translation.. Well Bing tells me


So, when this is a correct translation - I have no clue, if it is - then you need to post your code.

Otherwise the answer is simple: Just enter the text input in the correct format.

I encounter the problem to last line below

            If (shopcodehold = "" Or shopCode <> shopcodehold) Then
                shop.Add(shopName)
				...

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I encounter the problem to last line below

    Private shopcodelist As New ArrayList, shop As New ArrayList, weeks As New ArrayList
	...
            If (shopcodehold = "" Or shopCode <> shopcodehold) Then
                shop.Add(shopName)
				...

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What does shopName contain?

btw, post a concise and complete example. Create a console application which shows this behavior. You will see, that often when creating such an test, that you will find the error on your own. And when not, you have a good starting point for a question.

Hi,
I further get the error message with stacktrace like

Conversion from string " " to type 'Double' is not valid.    於 Microsoft.VisualBasic.CompilerServices.Conversions.ToDouble(String Value, NumberFormatInfo NumberFormat)
   於 Microsoft.VisualBasic.CompilerServices.Operators.AddObject(Object Left, Object Right)
   於 KongTaiToolbar.StoreTurnoverCompareReport.CreateReportSheet(Int32 startRowIndex) 於 C:\Kts Projects\KongTai\KongTai Toolbar\KongTaiToolbar\Reports\StoreTurnoverCompareReport.vb: 行 327

due to this line

                    Dim temp2 As Double = Double.Parse(IIf(area2.Value.ToString.Trim = "", 0, area2.Value))

How to resolve this?