C # to get twice the time interval by clicking on the button how to write?-CodePudding

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C # to get twice the time interval by clicking on the button how to write?

Time：10-01

With second unit
The small white for help

CodePudding user response:

 
DateTime t1, t2; 
Private void button1_Click (object sender, EventArgs e) 
{

T2=DateTime. Now; 
If (t1!!!=a DateTime. MinValue) 
{
MessageBox. Show ((t2 - t1). The ToString ()); 
} 
The else 
{
MessageBox. Show (" for the first time, click on "); 
} 
T1=t2; 
}

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