private void TextFeild_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Right || e.KeyCode == Keys.Left)
{
int length_pri = 0, index_pri = 0;
Text = TextFeild.Text;
indexatstart = index = TextFeild.SelectionStart;
if (Text.Contains(Word) && Word != "")
{
index = 0;
while (index_pri != -1)
{
length_pri = 0; index_pri = 0;
length_pri = Word.Length;
index_pri = Text.IndexOf(Word, index + length);
if (index_pri != -1)
{
TextFeild.Select(index_pri, length_pri);
TextFeild.SelectionBackColor = Color.White;
}
length = length_pri; index = index_pri;
}
}
length = 0;
string selectiontext = "";
if (e.KeyCode == Keys.Right)
{
indexatstart++;
}
else if (e.KeyCode == Keys.Left)
{
indexatstart--;
}
else if (e.KeyCode == Keys.Up)
{
index = TextFeild.SelectionStart = indexatstart;
index--;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
while (selectiontext != "\n")
{
length++;
index--;
if (index >= 0)
{
selectiontext = Text.Substring(index, 1);
}
else
{
selectiontext = "\n";
}
}
length++;
index--;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
while (selectiontext != "\n")
{
index--;
if (index >= 0)
{
selectiontext = Text.Substring(index, 1);
}
else
{
selectiontext = "\n";
}
}
indexatstart = index + length;
}
else if (e.KeyCode == Keys.Down)
{
index = TextFeild.SelectionStart = indexatstart;
index--;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
while (selectiontext != "\n")
{
length++;
index--;
if (index >= 0)
{
selectiontext = Text.Substring(index, 1);
}
else
{
selectiontext = "\n";
}
}
index++;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
while (selectiontext != "\n")
{
index++;
if (index >= 0)
{
selectiontext = Text.Substring(index, 1);
}
else
{
selectiontext = "\n";
}
}
indexatstart = index + (length + 1);
}
length = 0;
selectiontext = "";
index = TextFeild.SelectionStart = indexatstart;
index--;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
while (selectiontext != " " && selectiontext != "\n")
{
length++;
index--;
if (index >= 0)
{
selectiontext = Text.Substring(index, 1);
}
else
{
selectiontext = "\n";
}
}
index = index + (length);
index++;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
while (selectiontext != " " && selectiontext != "\n")
{
length++;
index++;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
else
{
selectiontext = "\n";
}
}
if (e.KeyCode == Keys.Right)
{
indexatstart--;
}
else if (e.KeyCode == Keys.Left)
{
indexatstart++;
}
else if (e.KeyCode == Keys.Down)
{
indexatstart = indexatstart - (length + 1);
}
else if (e.KeyCode == Keys.Up)
{
indexatstart = indexatstart + (length + 1);
}
index = index - length;
length_pri = 0; index_pri = 0;
if ((index + length) <= Text.Length)
{
Word = Text.Substring(index, length);
}
if (Text.Contains(Word) && Word != "")
{
index = 0;
while (index_pri != -1)
{
length_pri = 0; index_pri = 0;
length_pri = Word.Length;
index_pri = Text.IndexOf(Word, index + length);
if (index_pri != -1)
{
string nxtchr = "";
if (index_pri + length_pri + 1 < Text.Length)
{
nxtchr = Text.Substring(index_pri + length_pri, 1);
}
else
{
nxtchr = " ";
}
TextFeild.Select(index_pri, length_pri);
if ((nxtchr == " " || nxtchr == "\n") && Text.Substring(index_pri - 1, 1) == " ")
{
TextFeild.SelectionBackColor = Color.LightGray;
}
}
length = length_pri; index = index_pri;
}
TextFeild.SelectionStart = indexatstart;
TextFeild.SelectionLength = 0;
}
}
else if (e.KeyCode != Keys.Control && e.KeyCode != Keys.Back)
{
int length_pri = 0, index_pri = 0;
Text = TextFeild.Text;
indexatstart = index = TextFeild.SelectionStart;
if (Text.Contains(Word) && Word != "")
{
index = 0;
while (index_pri != -1)
{
length_pri = 0; index_pri = 0;
length_pri = Word.Length;
index_pri = Text.IndexOf(Word, index + length);
if (index_pri != -1)
{
TextFeild.Select(index_pri, length_pri);
TextFeild.SelectionBackColor = Color.White;
TextFeild.SelectionColor = Color.Black;
}
length = length_pri; index = index_pri;
}
}
if (e.KeyCode == Keys.Space || e.KeyCode == Keys.Enter)
{
int nextindex = 0;
string Syntaxwords = File.ReadAllText(Filename_Syntaxwords), iterator = "", Word = "";
index = 0;
length = 0;
while (nextindex < Syntaxwords.Length)
{
length = 0;
if (index < Syntaxwords.Length)
{
iterator = Syntaxwords.Substring(index, 1);
}
while (iterator != "\n" && iterator != "\r")
{
length++;
index++;
if (index < Syntaxwords.Length)
{
iterator = Syntaxwords.Substring(index, 1);
}
else
{
iterator = "\n";
}
}
nextindex = index;
index -= length;
if (index < Syntaxwords.Length)
{
Word = Syntaxwords.Substring(index, length);
}
length_pri = 0; index_pri = 0;
Text = TextFeild.Text;
if (Text.Contains(Word) && Word != "")
{
index = 0;
length = 0;
while (index_pri != -1)
{
length_pri = 0; index_pri = 0;
length_pri = Word.Length;
index_pri = Text.IndexOf(Word, index + length);
if (index_pri != -1)
{
string nxtchr = "";
if (index_pri + length_pri < Text.Length)
{
nxtchr = Text.Substring(index_pri + length_pri, 1);
}
else
{
nxtchr = " ";
}
TextFeild.Select(index_pri, length_pri);
if ((nxtchr == " " || nxtchr == "\n") && Text.Substring(index_pri - 1, 1) == " ")
{
TextFeild.SelectionColor = Color.Blue;
}
}
length = length_pri; index = index_pri;
}
}
index = nextindex + 2;
}
}
TextFeild.SelectionStart = indexatstart;
TextFeild.SelectionLength = 0;
}
}
private void TextFeild_MouseClick(object sender, MouseEventArgs e)
{
int length_pri = 0, index_pri = 0;
Text = TextFeild.Text;
indexatstart = index = TextFeild.SelectionStart;
if (Text.Contains(Word) && Word != "")
{
index = 0;
while (index_pri != -1)
{
length_pri = 0; index_pri = 0;
length_pri = Word.Length;
index_pri = Text.IndexOf(Word, index + length);
if (index_pri != -1)
{
TextFeild.Select(index_pri, length_pri);
TextFeild.SelectionBackColor = Color.White;
}
length = length_pri; index = index_pri;
}
}
length = 0;
string selectiontext = "";
index = TextFeild.SelectionStart = indexatstart;
index--;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
while (selectiontext != " " && selectiontext != "\n")
{
length++;
index--;
if (index >= 0)
{
selectiontext = Text.Substring(index, 1);
}
else
{
selectiontext = "\n";
}
}
index = index + (length);
index++;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
while (selectiontext != " " && selectiontext != "\n")
{
length++;
index++;
if (index < Text.Length)
{
selectiontext = Text.Substring(index, 1);
}
else
{
selectiontext = "\n";
}
}
index = index - length;
length_pri = 0; index_pri = 0;
Word = Text.Substring(index, length);
if (Text.Contains(Word) && Word != "")
{
index = 0;
while (index_pri != -1)
{
length_pri = 0; index_pri = 0;
length_pri = Word.Length;
index_pri = Text.IndexOf(Word, index + length);
if (index_pri != -1)
{
string nxtchr = "";
if (index_pri + length_pri + 1 < Text.Length)
{
nxtchr = Text.Substring(index_pri + length_pri, 1);
}
else
{
nxtchr = " ";
}
TextFeild.Select(index_pri, length_pri);
if ((nxtchr == " " || nxtchr == "\n") && Text.Substring(index_pri - 1, 1) == " ")
{
TextFeild.SelectionBackColor = Color.LightGray;
}
}
length = length_pri; index = index_pri;
}
TextFeild.SelectionStart = indexatstart;
TextFeild.SelectionLength = 0;
}
}