private void tvTablesColumns_ExpandTable(TreeNode tNode)
{
if (tNode.Parent == null) // Check for Tables or Views
{
return;
}
if (tNode.FirstNode.Text != "") // Have we already filled it out?
{
return;
}
// Need to obtain the column information for the requested table/view
// suppress redraw until tree view is complete
tvTablesColumns.BeginUpdate();
string sql = "SELECT * FROM " + DesignerUtility.NormalizeSqlName(tNode.Text);
List <SqlColumn> tColumns = DesignerUtility.GetSqlColumns(_Draw, _DataSource, sql);
bool bFirstTime = true;
foreach (SqlColumn sc in tColumns)
{
if (bFirstTime)
{
bFirstTime = false;
tNode.FirstNode.Text = sc.Name;
}
else
{
tNode.Nodes.Add(sc.Name);
}
}
tvTablesColumns.EndUpdate();
}
private void tvTablesColumns_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
TreeNode node = tvTablesColumns.GetNodeAt(e.X, e.Y);
if (node == null || node.Parent == null)
{
return;
}
string dragText;
if (tbSQL.Text == "")
{
if (node.Parent.Parent == null)
{ // select table; generate full select for table
tvTablesColumns_ExpandTable(node); // make sure we've obtained the columns
dragText = "SELECT ";
TreeNode next = node.FirstNode;
while (true)
{
dragText += DesignerUtility.NormalizeSqlName(next.Text);
next = next.NextNode;
if (next == null)
{
break;
}
dragText += ", ";
}
dragText += (" FROM " + DesignerUtility.NormalizeSqlName(node.Text));
}
else
{ // select column; generate select of that column
dragText = "SELECT " + DesignerUtility.NormalizeSqlName(node.Text) + " FROM " + DesignerUtility.NormalizeSqlName(node.Parent.Text);
}
}
else
{
dragText = node.Text;
}
tvTablesColumns.DoDragDrop(dragText, DragDropEffects.Copy);
}
private void bMove_Click(object sender, System.EventArgs e)
{
if (tvTablesColumns.SelectedNode == null ||
tvTablesColumns.SelectedNode.Parent == null)
{
return; // this is the Tables/Views node
}
TreeNode node = tvTablesColumns.SelectedNode;
string t = node.Text;
if (tbSQL.Text == "")
{
if (node.Parent.Parent == null)
{ // select table; generate full select for table
tvTablesColumns_ExpandTable(node); // make sure we've obtained the columns
StringBuilder sb = new StringBuilder("SELECT ");
TreeNode next = node.FirstNode;
while (true)
{
sb.Append(DesignerUtility.NormalizeSqlName(next.Text));
next = next.NextNode;
if (next == null)
{
break;
}
sb.Append(", ");
}
sb.Append(" FROM ");
sb.Append(DesignerUtility.NormalizeSqlName(node.Text));
t = sb.ToString();
}
else
{ // select column; generate select of that column
t = "SELECT " + DesignerUtility.NormalizeSqlName(node.Text) + " FROM " + DesignerUtility.NormalizeSqlName(node.Parent.Text);
}
}
tbSQL.SelectedText = t;
}
