Multidimensional Generics

[Chuck Bowling]

I have a list:

List<RichTextBoxrtb;

That represents an NxM matrix of rtb's. Is there some way to initialize a
generic that will allow me to access the List like a multidimensional array
i.e.;

rtb[2, 3].Text = "some text";

[Wiebe Tijsma]

Hi,

you can do it like this:

List<List<RichTextBox>rtb = new List<List<RichTextBox>>();

rtb[2][3].Text = "some text";

Regards,

Wiebe Tijsma

Chuck Bowling wrote:

I have a list:

List<RichTextBoxrtb;

That represents an NxM matrix of rtb's. Is there some way to initialize a
generic that will allow me to access the List like a multidimensional array
i.e.;

rtb[2, 3].Text = "some text";

[Joanna Carter [TeamB]]

"Wiebe Tijsma" <wi*********@CAPITALStijsma.coma écrit dans le message de
news: OC**************@TK2MSFTNGP04.phx.gbl...

| List<List<RichTextBox>rtb = new List<List<RichTextBox>>();

.... not forgetting :

rtb[2][3] = new RichTextBox(); or similar :-)

| rtb[2][3].Text = "some text";

Joanna

--
Joanna Carter [TeamB]
Consultant Software Engineer

[Wiebe Tijsma]

Yes, thanks for the addition, lets not forget adding the lists itself as
well :)

List<List<RichTextBox>rtb = new List<List<RichTextBox>>();
rtb.Add(new List<RichTextBox>());
rtb[0].Add(new RichTextBox());
rtb[0][0].Text = "some text";

Wiebe

Joanna Carter [TeamB] wrote:

"Wiebe Tijsma" <wi*********@CAPITALStijsma.coma écrit dans le message de
news: OC**************@TK2MSFTNGP04.phx.gbl...

| List<List<RichTextBox>rtb = new List<List<RichTextBox>>();

... not forgetting :

rtb[2][3] = new RichTextBox(); or similar :-)

| rtb[2][3].Text = "some text";

Joanna

[Marc Gravell]

Q: why not just use a multi-dimensional array of rtbs? However, the
following would wrap it reasonably well, assuming they exist first. At
least, it doesn't appear "jagged".

Marc

public class ArrayWrapper<T{
private readonly IList<Tdata;
private readonly int width;
public ArrayWrapper(IList<Tdata, int width) {
this.data = data;
this.width = width;
}
public T this[int x, int y] {
get { return data[GetIndex(x, y)]; }
set { data[GetIndex(x,y)] = value; }
}
private int GetIndex(int x, int y) {
return (y * width) + x;
}
}

[Chuck Bowling]

Great! Thanks Wiebe, Joanna and Marc. :)
"Wiebe Tijsma" <wi*********@CAPITALStijsma.comwrote in message
news:%2****************@TK2MSFTNGP05.phx.gbl...

Yes, thanks for the addition, lets not forget adding the lists itself as
well :)

List<List<RichTextBox>rtb = new List<List<RichTextBox>>();
rtb.Add(new List<RichTextBox>());
rtb[0].Add(new RichTextBox());
rtb[0][0].Text = "some text";

Wiebe

Joanna Carter [TeamB] wrote:

>"Wiebe Tijsma" <wi*********@CAPITALStijsma.coma écrit dans le message
de news: OC**************@TK2MSFTNGP04.phx.gbl...

| List<List<RichTextBox>rtb = new List<List<RichTextBox>>();

... not forgetting :

rtb[2][3] = new RichTextBox(); or similar :-)

| rtb[2][3].Text = "some text";

Joanna

[Chuck Bowling]

Wiebe I'm a little confused on this. Should the code look more like this:

List<List<RichTextBox>rtb = new List<List<RichTextBox>>();
rtb[0].Add(new List<RichTextBox>());
rtb[0][0].Add(new RichTextBox());
rtb[0][0].Text = "some text";
"Wiebe Tijsma" <wi*********@CAPITALStijsma.comwrote in message
news:%2****************@TK2MSFTNGP05.phx.gbl...

Yes, thanks for the addition, lets not forget adding the lists itself as
well :)

List<List<RichTextBox>rtb = new List<List<RichTextBox>>();
rtb.Add(new List<RichTextBox>());
rtb[0].Add(new RichTextBox());
rtb[0][0].Text = "some text";

Wiebe

Joanna Carter [TeamB] wrote:

>"Wiebe Tijsma" <wi*********@CAPITALStijsma.coma écrit dans le message
de news: OC**************@TK2MSFTNGP04.phx.gbl...

| List<List<RichTextBox>rtb = new List<List<RichTextBox>>();

... not forgetting :

rtb[2][3] = new RichTextBox(); or similar :-)

| rtb[2][3].Text = "some text";

Joanna

[Joanna Carter [TeamB]]

"Chuck Bowling" <ch**********@sbcglobal-NO-SPAM.neta écrit dans le message
de news: e3**************@TK2MSFTNGP04.phx.gbl...

| Wiebe I'm a little confused on this. Should the code look more like this:
|
| List<List<RichTextBox>rtb = new List<List<RichTextBox>>();
| rtb[0].Add(new List<RichTextBox>());
| rtb[0][0].Add(new RichTextBox());
| rtb[0][0].Text = "some text";

Chuck, thanks for filling in the holes, this is perfectly correct, but was
assumed by some of us :-)

Joanna

--
Joanna Carter [TeamB]
Consultant Software Engineer

[Wiebe Tijsma]

whoops... seems u worked it out perfectly

Joanna Carter [TeamB] wrote:

"Chuck Bowling" <ch**********@sbcglobal-NO-SPAM.neta écrit dans le message
de news: e3**************@TK2MSFTNGP04.phx.gbl...

| Wiebe I'm a little confused on this. Should the code look more like this:
|
| List<List<RichTextBox>rtb = new List<List<RichTextBox>>();
| rtb[0].Add(new List<RichTextBox>());
| rtb[0][0].Add(new RichTextBox());
| rtb[0][0].Text = "some text";

Chuck, thanks for filling in the holes, this is perfectly correct, but was
assumed by some of us :-)

Joanna