C# Zedgraph Exception Help..me

Question

I am using ZedGraph.

I am drawing a chart by receiving the values in real time.

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zedGraphControl1?.AxisChange();

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object reference not set to an instance of an object. A message appears saying...

I don't know the cause.

Please help me.

Answer 1

You must initialize the Zedgraph. It means you must allocate memory for its properties and methods.

zedgraph1.PointPairs = new PointPairList();
zedgraph1.Panel = new GraphPane();