C# chapter 5 :
For any one that have not read chapter 1 , 2 , 3 & 4 ,
Please refer C# chapter 1 , 2 , 3 & 4 if have any question.
OK! Let continue !
Find & Deleting part of the line
Must Remember This
Line count start from 0, so if Line is: ABCD
A=0 , B=1 , C=2 , D=3
Line count start from 0
//
is use for reminder note only , any things after // in the same line will not have any effect !
example 1 :
string STR_A; // declared that STR_A will be String
example 2 :
int INT_A; // declared that INT_A will be integer (number)
example 3 :
string STR_A, STR_B, STR_C; // declared that STR_A will be String
// declared that STR_B will be String
// declared that STR_C will be String
___________________________________________
Find & Deleting part of the line
C# code:
private void button1_Click(object sender, EventArgs e)
{
string STR_A, STR_B, STR_C;
int INT_A;
STR_A = "abcdefgh";
textBox1.Text = STR_A;
INT_A = STR_A.IndexOf("cde"); // find cde
STR_B = STR_A.Remove(INT_A, 3);
textBox1.Text = textBox1.Text + "\r\n" + "\r\n" + STR_B;
}
THEN Select Debug -> Start without Debugging
~ ~ Wait for a while ~ ~ ~
The program Form screen will come out.
Let click on button1
abcdefgh
abfgh
will show up inside the Textbox.
Explanation :
IndexOf("???")
??? = the string of character you want to find, can be single character like "A" or
many character like " ABCD "
IndexOf("???") will give an answer in integer, this is the starting position in the line for the
string of character you want to find
so to find "cde" in "abcdefgh" the answer is 2 for c . c is the 1st in "cde"
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cde");
so INT_A will be 2.
STR_B = STR_A.Remove(INT_A, 3);
Remove(x, y)
x = start from ?
y = How many character to be delete
for the program above
So this will be start at 3rd position in the line , delete 3 character
" c " is the one at the 3rd position in line , delete 3 character , so "cde" had been deleted.
abcdefgh become abfgh
Must Remember This : Line count start from 0, so if Line is: ABCD
A=0 , B=1 , C=2 , D=3
Example 2 , C# code:
private void button1_Click(object sender, EventArgs e)
{
string STR_A, STR_B;
int INT_A;
STR_A = "abcdefgh";
textBox1.Text = STR_A;
INT_A = STR_A.IndexOf("cdef"); // find cdef
STR_B = STR_A.Remove(INT_A + 1, 2);
textBox1.Text = textBox1.Text + "\r\n" + "\r\n" + STR_B;
}
THEN Select Debug -> Start without Debugging
~ ~ Wait for a while ~ ~ ~
The program Form screen will come out.
Let click on button1
abcdefgh
abcfgh
will show up inside the Textbox.
Explanation :
IndexOf("???")
??? = the string of character you want to find, can be single character like "A" or
many character like " ABCD "
IndexOf("???") will give an answer in integer, this is the starting position in the line for the
string of character you want to find
so to find "cdef" in "abcdefgh" the answer is 2 for c . c is the 1st in "cdef"
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cdef");
so INT_A will be 2.
STR_B = STR_A.Remove(INT_A + 1, 2);
Remove(x, y)
x = start from ?
y = How many character to be delete
for the program above
So this will be start at INT_A + 1 position in the line
INT_A is 2 , so INT_A + 1 = 2+1 the answer is 3
Line count start from 0
So this will be start at 4th position in the line , delete 2 character
" d " is the one at the 4th position in line , delete 2 character , so "de" had been deleted.
abcdefgh become abcfgh
Must Remember This : Line count start from 0, so if Line is: ABCD
A=0 , B=1 , C=2 , D=3
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cdef"); // find cdef
STR_B = STR_A.Remove(INT_A + 1, 2);
abcdefgh become abcfgh
From this you can see that ,
you search for "cdef" but you only delete part of it "de"
Remove(INT_A + 3, 2)
Remove(INT_A - 1, 5)
You can change the plus (+) to minus(-) , use it to delete part of line you don't want.
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cdef"); // find cdef
STR_B = STR_A.Remove(INT_A + 3, 2);
abcdefgh become abcdeh
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cdef"); // find cdef
STR_B = STR_A.Remove(INT_A - 1, 5) ;
abcdefgh become agh
___________________________________________
Need More Detail ? contact me !!
Please send me some money at Paypal
Any small amount is welcome , even 10 cents is good for me.
I will guide you step by step, personally.
My Paypal Account is : ksw.industries@gmail.com
Don't know how to send money ? Click here for detail about Paypal account.
http://xyberpast.blogspot.com/2014/05/how-to-get-my-program.html
Don't have money? OK! Here is another way to get the program.
http://xyberpast.blogspot.com/2014/05/how-to-get-my-program.html
For any one that have not read chapter 1 , 2 , 3 & 4 ,
Please refer C# chapter 1 , 2 , 3 & 4 if have any question.
OK! Let continue !
Working with Text
Find & Deleting part of the line
Must Remember This
Line count start from 0, so if Line is: ABCD
A=0 , B=1 , C=2 , D=3
Line count start from 0
//
is use for reminder note only , any things after // in the same line will not have any effect !
example 1 :
string STR_A; // declared that STR_A will be String
example 2 :
int INT_A; // declared that INT_A will be integer (number)
example 3 :
string STR_A, STR_B, STR_C; // declared that STR_A will be String
// declared that STR_B will be String
// declared that STR_C will be String
___________________________________________
Find & Deleting part of the line
C# code:
private void button1_Click(object sender, EventArgs e)
{
string STR_A, STR_B, STR_C;
int INT_A;
STR_A = "abcdefgh";
textBox1.Text = STR_A;
INT_A = STR_A.IndexOf("cde"); // find cde
STR_B = STR_A.Remove(INT_A, 3);
textBox1.Text = textBox1.Text + "\r\n" + "\r\n" + STR_B;
}
THEN Select Debug -> Start without Debugging
~ ~ Wait for a while ~ ~ ~
The program Form screen will come out.
Let click on button1
abcdefgh
abfgh
will show up inside the Textbox.
Explanation :
IndexOf("???")
??? = the string of character you want to find, can be single character like "A" or
many character like " ABCD "
IndexOf("???") will give an answer in integer, this is the starting position in the line for the
string of character you want to find
so to find "cde" in "abcdefgh" the answer is 2 for c . c is the 1st in "cde"
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cde");
so INT_A will be 2.
STR_B = STR_A.Remove(INT_A, 3);
Remove(x, y)
x = start from ?
y = How many character to be delete
for the program above
So this will be start at 3rd position in the line , delete 3 character
" c " is the one at the 3rd position in line , delete 3 character , so "cde" had been deleted.
abcdefgh become abfgh
Must Remember This : Line count start from 0, so if Line is: ABCD
A=0 , B=1 , C=2 , D=3
Example 2 , C# code:
private void button1_Click(object sender, EventArgs e)
{
string STR_A, STR_B;
int INT_A;
STR_A = "abcdefgh";
textBox1.Text = STR_A;
INT_A = STR_A.IndexOf("cdef"); // find cdef
STR_B = STR_A.Remove(INT_A + 1, 2);
textBox1.Text = textBox1.Text + "\r\n" + "\r\n" + STR_B;
}
THEN Select Debug -> Start without Debugging
~ ~ Wait for a while ~ ~ ~
The program Form screen will come out.
Let click on button1
abcdefgh
abcfgh
will show up inside the Textbox.
Explanation :
IndexOf("???")
??? = the string of character you want to find, can be single character like "A" or
many character like " ABCD "
IndexOf("???") will give an answer in integer, this is the starting position in the line for the
string of character you want to find
so to find "cdef" in "abcdefgh" the answer is 2 for c . c is the 1st in "cdef"
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cdef");
so INT_A will be 2.
STR_B = STR_A.Remove(INT_A + 1, 2);
Remove(x, y)
x = start from ?
y = How many character to be delete
for the program above
So this will be start at INT_A + 1 position in the line
INT_A is 2 , so INT_A + 1 = 2+1 the answer is 3
Line count start from 0
So this will be start at 4th position in the line , delete 2 character
" d " is the one at the 4th position in line , delete 2 character , so "de" had been deleted.
abcdefgh become abcfgh
Must Remember This : Line count start from 0, so if Line is: ABCD
A=0 , B=1 , C=2 , D=3
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cdef"); // find cdef
STR_B = STR_A.Remove(INT_A + 1, 2);
abcdefgh become abcfgh
From this you can see that ,
you search for "cdef" but you only delete part of it "de"
Remove(INT_A + 3, 2)
Remove(INT_A - 1, 5)
You can change the plus (+) to minus(-) , use it to delete part of line you don't want.
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cdef"); // find cdef
STR_B = STR_A.Remove(INT_A + 3, 2);
abcdefgh become abcdeh
STR_A = "abcdefgh";
INT_A = STR_A.IndexOf("cdef"); // find cdef
STR_B = STR_A.Remove(INT_A - 1, 5) ;
abcdefgh become agh
___________________________________________
Need More Detail ? contact me !!
Please send me some money at Paypal
Any small amount is welcome , even 10 cents is good for me.
I will guide you step by step, personally.
My Paypal Account is : ksw.industries@gmail.com
Don't know how to send money ? Click here for detail about Paypal account.
http://xyberpast.blogspot.com/2014/05/how-to-get-my-program.html
Don't have money? OK! Here is another way to get the program.
http://xyberpast.blogspot.com/2014/05/how-to-get-my-program.html
