How to add Zero(0) prefix and suffix in a value.(it should be Numeric or Decimal) using C# and VB.Net

Hi Developers, How to add zero(0) if the TextBox decimal value Length more than 1 My Reqiurements is as below if TextBox value is =.1 should be insert as 00.10 if TextBox value is =1.0 should be insert as 1.00 if TextBox value is =1 should be insert as 1.00 if TextBox value is =1.000 should be insert as 1.00 if TextBox value is =0.1 should be insert as 0.10 if TextBox value is =1234 = should be insert as 1234 if TextBox value is =1234.22 = should be insert as 1234.22 if TextBox value is =1234.2= should be insert as 1234.20 if TextBox value is =1234.222 = should be insert as 1234.20 if the value decimal length is 1 or more than 1 na automatically add zero. if Decimal value less than 2 or more than 2 digits if 1.2 will be 1.20  if 1.222 will be 1.20 also if i am done this task means my project is over. I am tried but i cant able to get exact output.so anyone know please help me to how am done this task thanking you Paul.S