Question on Script task

Hi,

Could you please tell me if the C# code written inside below funciton under a script task, would it execute the statement sequentially?

 public override void Input0_ProcessInputRow(Input0Buffer Row)
    { 
     string x= "" ;
     Row.Column1 = x + "Somevalue";
}

In the above code, would the value x be initialized as empty string for each row in the Data Flow?

In the above code, would the Column1 have  value of just "somevalue" or would it append with previous values?