c# - ZedGraph Pie Label: How to display Value and Percent, but not Name? -

i using zedgraph display pie charts in c# winforms application. want display legend , labels next each pie slice in following format:

legend: each item should display name of pie slice, e.g. "customers"

slice label: each label should display value , percent, e.g. "4 (25%)"

by default able have legend displaying name desired. on label requirement...

i have looked labeltype property, allows me select few options label format (here list). unfortunately, there no value_percent option. cannot use ones include name because long , ruins display of labels.

i though perhaps set text label myself able calculate both value , percent anyway, tried this:

pieitem.label.text = mycustomstring; 

this desired labels, sets legend key format same - lose requirement of name.

is possible change slice label text independent of legend text? or, possible achieve requirements way?

i have managed achieve requirements modifying source code. still interested in knowing if there way without making source changes, in mean time here did...

the source code can downloaded here, , used version 5.1.5 line number references may wrong in other versions.

there 2 segments of code need added, in 2 separate files:

zedgraph/types.cs

there enum called pielabeltype located @ line 729. here need add new value called value_percent.

zedgraph/pieitem.cs

there function called buildlabelstring located @ line 942. within function switch statement need add new condition our new pielabeltype:

case pielabeltype.value_percent:     curve._labelstr = curve._pievalue.tostring("f", labelformat) + " (" + (curve._sweepangle / 360).tostring("p", labelformat) + ")";     break; 

i have chosen format "# (#.##%)", can required.

that's it. build project , include new modified dll in application , new pielabeltype ready use.