Convert.ToXXXX(object) vs (XXX)object

What is more effecient to use when converting data types in C#.
Convert.ToXXXX(object) method or (XXXXX)object way?

i find the Convert.To method the best
eg:

Code:

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string str="i'm some text " + Convert.ToChar(169);///169 is copyright symbol
MessageBox.Show(str);

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in this example you can see another use of Convert , calculating time span differences :

Code:

---

private void button8_Click(object sender, System.EventArgs e)
{
        try
        {
        string strDate="11/06/2003 10:20:15";
        string strFinish="11/06/2003 18:28:37";
        TimeSpan s=Convert.ToDateTime(strFinish).Subtract(Convert.ToDateTime(strDate));
        MessageBox.Show("Difference in time:\n" + s.ToString());
        }
        catch
        {
        System.Exception f = new System.Exception();
        MessageBox.Show(f.Message);
        }
}

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Quote:

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Originally posted by dynamic_sysop
i find the Convert.To method the best
eg:

Code:

---

string str="i'm some text " + Convert.ToChar(169);///169 is copyright symbol
MessageBox.Show(str);

---

in this example you can see another use of Convert , calculating time span differences :

Code:

---

private void button8_Click(object sender, System.EventArgs e)
{
        try
        {
        string strDate="11/06/2003 10:20:15";
        string strFinish="11/06/2003 18:28:37";
        TimeSpan s=Convert.ToDateTime(strFinish).Subtract(Convert.ToDateTime(strDate));
        MessageBox.Show("Difference in time:\n" + s.ToString());
        }
        catch
        {
        System.Exception f = new System.Exception();
        MessageBox.Show(f.Message);
        }
}

---

---

for casting numbers to char i prefer a lot using (char)number as a char is just a kind of typedef of a ushort(from 0 to 65535 if i am not mistaken) so if u put a number from 0 to 65535(altough i think when using regular encoding you just use from 0 to 255) no error will happen and the code gets a lot easier to read from if u have many chars u want to convert