c# - Child Form Size Set to the MDI Form's MDI Container's Size -

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i'd know how can have child form load it's size covering complete mdi parent's mdi container space (the dark-gray thing)? setting child form's windowstate maximized not option it'll maximize other form too. suggestions?

i think code should it:

form childform = new form(); f.left = 0; f.top = 0; f.size = parentform.clientrectangle.size;

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