C#

public void btnAdd_Click(object sender, System.EventArgs e)<br />
		{<br />
			strPartNumberInputReference = txtSearchPart.Text;<br />
			strPartTypeID = ddPartType.SelectedValue;<br />
			strDwgNumber = txtDwgNumber.Text;<br />
			strDwgRevision = txtDwgRevision.Text;<br />
			strDwgLocation = txtDwgLocation.Text;	<br />
			SqlParameter param1 = new SqlParameter("@PartNumber", strPartNumberInputReference);	<br />
			SqlParameter param2 = new SqlParameter("@PartTypeValue", strPartTypeID);<br />
			SqlParameter param3 = new SqlParameter("@ID", SqlDbType.Int);<br />
			param3.Direction = ParameterDirection.Output;<br />
			 try<br />
			{<br />
				IDOutput = SqlHelper.ExecuteNonQuery (this.connectionString, CommandType.StoredProcedure, "dbo.UpdatePart_Step_1", param1, param2, param3);<br />
				IDOutput2 = param3.Value;<br />
				SqlParameter param4 = new SqlParameter("@DwgRevision", strDwgRevision);<br />
				SqlParameter param5 = new SqlParameter("@DwgNumber", strDwgNumber);<br />
				SqlParameter param6 = new SqlParameter("@DwgLocation", strDwgLocation);<br />
				SqlParameter param7 = new SqlParameter("@ID2", IDOutput2);<br />
				IDOutput = SqlHelper.ExecuteNonQuery (this.connectionString, CommandType.StoredProcedure, "dbo.UpdatePart_Step_1_part2", param4, param5, param6, param7);<br />
				Response.Write ("Successful update.");<br />
				txtSearchPart.Text = "";<br />
				txtDwgNumber.Text = "";<br />
				txtDwgLocation.Text = "";<br />
				txtDwgRevision.Text = "";<br />
				ddPartType.SelectedIndex = 1;<br />
				Response.Write (IDOutput2);<br />
				Session["number"] = IDOutput2;				Session["strPartNumberInputReference"] = strPartNumberInputReference;<br />
			<br />
			}<br />
<br />
			catch<br />
			{<br />
				Response.Write ("Insert failed.");<br />
			}<br />
		}

private void Page_Load(object sender, System.EventArgs e)<br />
		{<br />
			IDOutput3 = Session["number"];<br />
			if(Page.IsPostBack)<br />
			{<br />
				BindData();	<br />
.<br />
.<br />
.

Josh Smith wrote:

You were only returning a value at the bottom of the try block.

Josh Smith wrote:

can't modify an event handler's signature anywa

leckey wrote:

So how do I actually fix this so I can access the value outside of btnAdd_Click?

Christian Graus wrote:

he easiest way to do this may well be to create a tree control that is never shown on a form, and populate it.

Josh Smith wrote:

(no offense to you, Christian).

Josh Smith wrote:

If you don't need a control, don't use one, it's really expensive.

Christian Graus wrote:

I would not regard the overhead to be that much, certainly compared to the overhead of writing a tree structure, assuming one can't be found to use. But, like I said, I'm not claiming to always be right

Christian Graus wrote:

certainly compared to the overhead of writing a tree structure

class Tree
{
    private int value = 0;

    public Tree leftChild = null;
    public Tree rightChild = null;

    public Tree(int value) { this.value = value; }
}

Tree root = new Tree(123);
root.leftChild = new Tree(5);
root.rightChild = new Tree(411);

public class Tree {
    private Tree parent;
    private List<Tree> children;

    public Tree Parent {
        get { return parent; }
        set { parent = value; }
    }

    public List<Tree> Children {
        get { return children; }
        set { children = value; }
    }
}

private void picBox_MouseDown(object sender, MouseEventArgs e)
{
   downX = e.X;
   downY = e.Y;
   vertValue = pnl.VerticalScroll.Value;
   horizValue = pnl.HorizontalScroll.Value;
   inMove = true;
}

private void picBox_MouseMove(object sender, MouseEventArgs e)
{
   if (inMove)
   {
      int diffX = e.X - downX;
      int diffY = e.Y - downY;

      pnl.VerticalScroll.Value = vertValue + diffX;
      pnl.HorizontalScroll.Value = horizValue + diffY;
   }
}

private void picBox_MouseUp(object sender, MouseEventArgs e)
{
   inMove = false;
}