i need to put validations on vsflexgrid if there having no values in it

As per your question i guess the following code snippet will help you

Check the grid textmatrix...

if it is blank then no data...

example:

For i = 1 To vsflexgrid.Rows - 1
    if (vsflexgrid.TextMatrix(i, 0) = "") then
        msgbox("No Data")
    else
        msgbox("Data Present")
    endif
Next i

Hope this will solve your query...