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RDLC exported to excel to show negative numbers in parentheses

I have an rdlc file with cells showing decimals.
How do I convert a negative number to have parenthesis?
I can't display it as a string, because when the report is exported it treats in as a string and throws an error that the number could not convert a string.
I've tried adding #,0:c0 for the format property but this didn't work.
Any suggestions?

Try to not use the Format function in the Expression of your Placeholder, instead in the text box (or cell) properties, you can set the type and the format of it.
In the properties, there is a section called Number in which you specify that the textbox must contains numbers of a specificated category.
Here is an image to explain:
As you can see, there is an option to set how to display negative numbers (the one selected).
Now, I'm sure that this will works if you export the report in PDF but I hope this will be the same for Excel's export

I worked it out, sorry to answer my own question.
if I use the following in the format property #,0;(-#,0) it works fine.

In my case below custom expression solved my problem.
''#,0.00;''(#,0.00);

DataGridView Format Decimal Values with AutoGenerateColumns

I have a datagridview that uses AutoGenerateColumns in winforms. There is a date column and then 1-16 data columns containing numeric values. I want all of these 1-16 data columns to be formatted to 4 decimal places.
As per this post, you set the DefaultCellStyle through the designer. I did this manually to get what format that I want to use. I set this in the form constructor:
this.dgv_PreviewGrid.DefaultCellStyle.Format = "N4";
I have tried setting it this way and also tried manually on each column on DataBindingComplete event. Nothing happens! The app lags as though it is doing the rounding, but doesn't.
Also, is there a link to msdn or something with a list of the DefaultCellStyle formats? Couldn't find them.
EDIT: I found that using Format "D4" instead of "N4" (Decimal vs. Number) --> is probably the format that I want, but it is still not working.

The MSDN page you want is Standard Numeric Format Strings.
You want the N or F format specifier, not D. D is for integers.
Setting grid.DefaultCellStyle.Format should work, but since you have a date column you will need to override that column's DefaultCellStyle, or the dates won't display.
What is the actual type of the numeric property on your datasource? Are you sure it isn't a string? How are you populating the DataGridView?
Without more information it's difficult to guess the problem. It might help if you show the code that populates the DataGridView.

Issue with textbox rounding a number

I have the following code:
txtbox1.Text = listView1.SelectedItems[0].SubItems[11].Text;
The value of the selected item of the listview is "33,5" but when the code reachs this line, in the textbox writes 34,00.
I don't know why if there's a text inside a text, I have tried convertingo to decimal before asing to the textbox but still put 34,00. I've tried too puting 33.5 instead of 33,5 but then the code writes in the textbox: 3350,0.
What can I do?
Thanks

try this:
string number = listView1.SelectedItems[0].SubItems[11].Text;
and check in debug mode what number contains.
I am convinced you have the right value in there, a simple string, but the txtbox1 is applying certain formatting on text change. You should find this out and fix the way content of txtbox1 is formatted after assignment.

Limit number of characters in Label

I am using label in my winform . It displays the value which I enter in another textbox. My problem is label does not display whole characters I enter in textbox. Label's size is width=160 and height=19. So it truncates the last value. For testing purpose when I enter "W" in caps in textbox ;label can display maximum 13 "W"s. So I am trimming the
charater's by using labelname.substring(0,10); and for next three characters I am appending 3 dots(...)
But this solution is not desirable to my senior. He is telling me that if I enter all small letters "l" in textbox then though label has space to display more than 13 characters it will display only 13 characters(including dots).
Does anybody has solution on that ?? I also cannot increase width or height of label to accomodate more characters.

Well, you could set the AutoEllipsis property to true and don't worry about the length of the text.
Edited to Add: as per comments
If you're using RadLabel from Telerik then you need to dig a little more:
RadLabel.LabelElement.LabelText.AutoEllipsis
Nothing that 5 minutes looking through the documentation doens't solve

Set the AutoEllipsis property of your Label control to true. You can do this either in the designer, or through code:
myLabel.AutoEllipsis = true;
That will cause the ellipsis character (...) to be automatically appended to the text if it overflows the space available in the label. You won't have to manage this yourself in code at all.
This property is available as far back as .NET 3.0.

If I understand your question correctly, you can use Textbox.MaxLength property which only allows the user to enter the maximum number of characters you set the value to.

You can set the label's AutoEllipsis property to true and let it figure this out for itself.
Gets or sets a value indicating
whether the ellipsis character (...)
appears at the right edge of the
Label, denoting that the Label text
extends beyond the specified length of
the Label.

How to display Chinese characters in ListView?

maybe anyone have ideas of how to display Chinese characters in the ListView control ?

Ensure you have Chinese character capabilities on your actual machine and browser:
http://www.jp41.com/internet-explorer/chinese/
If you've done that and it's still a problem, perhaps you are getting data from a database that has been input as Chinese, but the data type on the relevant column isn't Unicode. In which case make change the data type to for example, nvarchar.