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int abc_read(unsigned char _Adr,unsigned char *_Data);

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C# code:

[DllImport("abc.dll")]
static extern int abc_read(int _Adr,String _Data);
private void button1_Click(object sender, EventArgs e)
{
String c="";
int ret = abc_read(1, c);
if (ret == 0)//º¯Êýµ÷Óóɹ¦
{
label1.Text = c.ToString();
}
else
{
MessageBox.Show("failed-" + ret);
}
}



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