Need help with a GUI checkbox

[epd5030]

private: System::Void checkBox1_CheckedChanged(System::Object^ sender, System::EventArgs^ e) {
if(checkBox1->CheckState = CheckState::Checked)
{
chart1->ChartAreas[0]->AxisY->Minimum = 1;
chart1->ChartAreas[0]->AxisY->Interval = 1;

chart2->ChartAreas[0]->AxisY->Minimum = 1;
chart2->ChartAreas[0]->AxisY->Interval = 1;

chart3->ChartAreas[0]->AxisY->Minimum = 1;
chart3->ChartAreas[0]->AxisY->Interval = 1;
}
else(checkBox1->CheckState = CheckState::Unchecked)
{
chart2->ChartAreas[0]->AxisY->Minimum = 5;
chart2->ChartAreas[0]->AxisY->Maximum = 15;

chart1->ChartAreas[0]->AxisY->Maximum = 15;
chart1->ChartAreas[0]->AxisY->Minimum = 5;

chart3->ChartAreas[0]->AxisY->Maximum = 15;
chart3->ChartAreas[0]->AxisY->Minimum = 5;
}

}
This is the part of the code I am having trouble with.
I'm having trouble utilizing the checkbox with chart control. I want the checkbox to be an autoscale when you check it. It will autoscale the graph, and when you uncheck it, it will go back to normal. I wrote this, but it doesn't work. Help please!

[coder777]

I don't know exactly what CheckState is, but the assignment = in if/else is certainly wrong.

Replace = with == (comparing operator)

[epd5030]

I tried fixing that, and that didn't fix my problem.
I'm getting an error, which is error C2143: syntax error : missing ';' before '{' for this. I don't understand why it is listing this error. I was hoping check state would go through the procedure if the box was check and unchecked.

[coder777]

it would be easier if you'd told me where the error is...

This is wrong:
else(checkBox1->CheckState = CheckState::Unchecked)

Change it to:
else if(checkBox1->CheckState = CheckState::Unchecked)

[epd5030]

That worked! Thanks for you help!