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ultraCurrencyEditor1=a.toString();
ultraCurrencyEditor1=b.toString();//a和b 都是Float型数
float s1 = float.Parse(textBox1.Text);
float s2 = float.Parse(textBox2.Text);
float s3 = s1 - s2;
textBox3.Text = s3.ToString();
ultraCurrencyEditor3.Text=(float.Parse(ultraCurrencyEditor1.Text)-float.Parse(ultraCurrencyEditor2.Text)).toString();
string a="123.25";
float.Parse(a); //此处转换完得话..a=123.25f么?
Convert.ToDouble("1.111") - Convert.ToDouble("1.044");