Autogenerate 10 Digit number

Question

When i enter 12 in textbox it should convert into 0101010112 randomaly when i enter 134 it should convert into 0101010134 in windows form

Vulpes · Answer

I can only think that you didn't make the padding string long enough to start with - I made it 10 characters long to be on the safe side. Anyway, glad it's working now :)

Angel Princess · Answer

Yes its working now .. Thanks a lot. the error was Index and length must refer to a location within the string. Parameter name: length

Angel Princess · Answer

Yes its working now .. Thanks a lot.

Jignesh Trivedi · Answer

hi, I have test vulpes code it working fine for me.... What error are you getting? can you please share error text?

Angel Princess · Answer

Thanks Vulpes.. but it gives error when entering 2 digits.. more than 2 digits, it is working successfully

Vulpes · Answer

If you mean that you want to 'pad left' whatever is entered in the textbox with as many characters of the string "0101010101" as are needed, then this code should do it: int len = textBox1.Text.Length; if (len { string padding = "0101010101"; textBox1.Text = padding.Substring(0, 10 - len) + textBox1.Text; }

Jignesh Trivedi · Answer

hi, Is it true what ever Munesh says? so can you please provide more information? what is logic etc...

Angel Princess · Answer

Yes the digits should remain 12 only

Munesh Sharma · Answer

no Jignesh Trivedi i also thinked like this but this is not question you see in question 0101010112 (here he is enter 12 and prefix is 01010101 ), 0101010134 ( here he is enter 134 and prefix is 0101010).. so prefix is changing.

Jignesh Trivedi · Answer

hi, I think 01010101 is prefix right? so in this case you can write textbox lost focus event and in this event you can add this prefix textbox1.Text = "01010101" + textbox1.Text; hope this will help you.