private void treeView_BeforeSelect(object sender, TreeViewCancelEventArgs e)
{
if (this.treeView.SelectedNode == null)
{
return;
}
if (this.treeView.SelectedNode.Tag is IDataFlowComponentPage)
{
IDataFlowComponentPage page = this.treeView.SelectedNode.Tag as IDataFlowComponentPage;
string msg = string.Empty;
if (page.ValidatePage(out msg) != PageValidationStatus.NoPageLeave)
{
if (!page.HidePage())
{
e.Cancel = true;
}
}
else
{
e.Cancel = true;
}
if (!string.IsNullOrEmpty(msg))
{
MessageBox.Show(msg, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error,
MessageBoxDefaultButton.Button1);
}
}
}
private void page_ValidationStateChanged(object sender, EventArgs args)
{
if (sender is IDataFlowComponentPage)
{
IDataFlowComponentPage page = sender as IDataFlowComponentPage;
string msg = string.Empty;
PageValidationStatus validationStatus = page.ValidatePage(out msg);
if (validationStatus == PageValidationStatus.Ok || validationStatus == PageValidationStatus.Warning)
{
this.btnOK.Enabled = true;
}
else
{
this.btnOK.Enabled = false;
}
MessageBox.Show(msg, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error,
MessageBoxDefaultButton.Button1);
}
}
private void btnOK_Click(object sender, EventArgs e)
{
IDataFlowComponentPage page = this.GetActivePage();
if (page != null)
{
string msg = String.Empty;
PageValidationStatus validationStatus = page.ValidatePage(out msg);
if (validationStatus == PageValidationStatus.Ok ||
validationStatus == PageValidationStatus.Warning)
{
if (!page.SavePage())
{
this.canClosed = false;
}
this.canClosed = true;
}
else
{
this.canClosed = false;
MessageBox.Show(msg, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error,
MessageBoxDefaultButton.Button1);
}
}
if (this.canClosed)
{
this.DialogResult = DialogResult.OK;
}
else
{
this.DialogResult = DialogResult.None;
}
}
