asp.net - How do I convert a string to an int type in C#? -

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i taking string value textbox named txtlastappointmentno , want convert int , store in database using linq sql getting error "input string not in proper format".

my input string 2.

my code is:

      objnew.lastappointmentno=convert.toint32(txtlastappointmenno.text);

please point out mistake.

assuming using webforms, need access textbox value , not textbox itself:

objnew.lastappointmentno = convert.toint32(txtlastappointmenno.text);

or if referencing html control then:

objnew.lastappointmentno = convert.toint32(request["txtlastappointmenno"]);

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