Create dynamic variable name

Can we create dynamic variable in C#?

I know my below code is threw error and very poor coding. But this code have small logic like create dynamic variable

var name=0;
for(i=0;i<10;i++)// 10 means grid length
{
    name+i=i;
}

var xx1=name1;
var xx2=name2;
var xx3=name3;

Is it possible in c#? Create dynamic variable in c#? and change the variable name in c#? and concatenate the variable name in c#(like we can concatenate any control id or name)...

Why I need the dynamic variable name (scenario):

var variablename=""
var variablename0=No;
var variablename1=Yes;
var variablename2=No;

. . .

I have a gridview with multiple rows. And I need assign server side variable to every row. So I need set of variables in server side. the only I can set Text=<%# variablename+rowCount%> for every template field.

This rowCount means every grid row index.

If the grid has 2 rows, Then rowCount values are 0,1,2

Now I need to change the variablename to variablename0,variablename1,variablename2 dynamically for separate row.