Make a textbox act like Excell Cell

[vuyiswamb]

Hi All

i am converting an Excell spreadsheet into an application. So i am doing automatic calculations like Excell do , for some of the cells(textbox) should allow a user to enter the minus sign "-" , and this automatically minus value entered. So my issue here is if th the users enters that character it breaks my app's calculations. Does anyone have any idea how to bypass this ?

Thanks

[MattP]

Can you post the code you're using at the moment for the calculations? Silverlight is just going to treat anything entered into the TextBox as a string.