C#

<br />
DataSet dsSet;<br />
DataTable table;<br />
<br />
// ... fill of dataset ...<br />
<br />
DataColumn[] columns = new DataColumn[ table.Columns.Count ];<br />
table.Columns.CopyTo( columns, 0 );<br />
<br />
// ... <br />
table.Columns.Clear(); <br />
<br />
ArrayList lst = new ArrayList( columns );<br />
<br />
// change order and quantity of columns <br />
lst.Insert( ... );<br />
lst.RemoveAt( ... );<br />
lst.Add( ... );<br />
<br />
// add columns to table again<br />
table.Columns.AddRange( ( DataColumn[] )lst.ToArray( typeof( DataColumn ) ) );<br />
<br />
lst.Clear();<br />

<br />
//get all columns in dsSource to arraylist<br />
DataColumn[] columns = new DataColumn[ dsSource.Tables[0].Columns.Count ];<br />
dsSource.Tables[0].Columns.CopyTo( columns, 0 );<br />
ArrayList lst = new ArrayList( columns );<br />
dsSource.Tables[0].Columns.Clear();<br />
<br />
//insert new column<br />
DataColumn dc = new DataColumn();<br />
lst.Insert(7, dc);<br />
<br />
// add columns to dsNew<br />
dsSource.Tables[0].Columns.AddRange( ( DataColumn[] )lst.ToArray( typeof( DataColumn ) ) );<br />
<br />
lst.Clear();<br />

<br />
DataRow[] rows = new DataRow[ dsSource.Tables[0].Rows.Count ];<br />
dsSource.Tables[0].Rows.CopyTo(rows, 0);<br />
ArrayList lst = new ArrayList( rows);<br />
DataSet dsNew = new DataSet();<br />
<br />
foreach(DataRow drs in lst)<br />
{<br />
	ArrayList lst2 = new ArrayList(drs.ItemArray);<br />
	lst2.Insert(3, "Insert Value");<br />
	DataRow ndr = dsNew.Tables[0].NewRow();<br />
<br />
	//get data from lst2 into ndr????<br />
	//ndr.ItemArray = lst2;<br />
<br />
	dsNew.Tables[0].Rows.Add(ndr);<br />
}

<br />
DataRow[] rows = new DataRow[ dsSource.Tables[0].Rows.Count ];<br />
dsSource.Tables[0].Rows.CopyTo(rows, 0);<br />
ArrayList lst = new ArrayList( rows);<br />
DataSet dsNew = new DataSet();<br />
dsNew.Tables.Add();<br />
<br />
for (int i=0; i<dsSource.Tables[0].Rows[0].ItemArray.Length + 1; i++)<br />
	dsNew.Tables[0].Columns.Add();<br />
<br />
foreach(DataRow drs in lst)<br />
{<br />
	ArrayList lst2 = new ArrayList(drs.ItemArray);<br />
	lst2.Insert(3, "INSERT VALUE");	//can be null						<br />
	DataRow ndr = dsNew.Tables[0].NewRow();<br />
	ndr.ItemArray = lst2.ToArray();												<br />
	dsNew.Tables[0].Rows.Add(ndr);<br />
}<br />

<br />
using System;<br />
using System.IO;<br />
<br />
FileInfo info = new FileInfo( "myfilename" );<br />
DateTime modified = info.LastWriteTime;<br />

[DllImport("User32.Dll")]
<font color="blue">Public</font> <font color="blue">Static</font> extern int PostMessage (int hwnd,int wMsg,int wParam,int lParam);
<font color="blue">Public</font> <font color="blue">Const</font> int WM_CLOSE = 0x10;
<font color="darkgreen">'//// where you'd normally put your declares ^^^</font>
<font color="darkgreen">'////</font>

<font color="blue">Private</font> void button1_Click(<font color="blue">Object</font> sender, System.EventArgs e)
{
    <font color="blue">Try</font>
    {
    PostMessage(this.Handle.ToInt32(),WM_CLOSE,0,0);
    }
    <font color="blue">Catch</font>
    {
                System.Exception r=new System.Exception();
    MessageBox.Show(r.Message.ToString());
    }
}

My Signature Below

<font color="blue">Private void</font> ExpectingTwins(<font color="blue">string</font> twins)
    {    
    <font color="blue">switch</font>(twins)
    {
    <font color="blue">Case</font> ("twins on the way"):
        MessageBox.Show("for mr and mrs dynamic","twins on the way");
    <font color="blue">break</font>;
    }
    }

α.γεεκ

Fortune passes everywhere.
Duke Leto Atreides