public void OnSaveChange(Microsoft.SharePoint.SPField field, bool isNewField)
{
ValidateSettings();
this.Url = txtUrl.Text.Trim();
this.List = (ddlList.SelectedIndex > 0) ? ddlList.SelectedValue : "";
this.Field = (ddlField.SelectedIndex > 0) ? ddlField.SelectedValue : "";
this.ParentField = (ddlParentField.SelectedIndex > 0) ? ddlParentField.SelectedValue : "";
this.FilterValueField = (ddlFilterValueField.SelectedIndex > 0) ? ddlFilterValueField.SelectedValue : "";
this.DefineNone = chkDefineNone.Checked.ToString();
if (chkFilterCriteria.Checked)
{
if (!string.IsNullOrEmpty((this.FilterValueField)))
{
SPField parentField = field.ParentList.Fields.GetFieldByInternalName(this.FilterValueField);
if (parentField != null)
{
CascadingLookupField clParentField = parentField as CascadingLookupField;
string childFieldName = ((isNewField) ? ConvertToInternalName(field.Title) : field.InternalName) + "] ";
if (!clParentField.ChildrenField.Contains(childFieldName))
{
clParentField.ChildrenField += childFieldName;
clParentField.Update();
}
}
}
}
CascadingLookupField clField = field as CascadingLookupField;
if (isNewField)
{
clField.UpdateMyCustomProperty("Url", this.Url);
clField.UpdateMyCustomProperty("List", this.List);
clField.UpdateMyCustomProperty("Field", this.Field);
clField.UpdateMyCustomProperty("ParentField", this.ParentField);
clField.UpdateMyCustomProperty("ChildrenField", this.ChildrenField);
clField.UpdateMyCustomProperty("FilterValueField", this.FilterValueField);
clField.UpdateMyCustomProperty("DefineNone", this.DefineNone);
}
else
{
clField.Url = this.Url;
clField.List = this.List;
clField.Field = this.Field;
clField.ParentField = this.ParentField;
clField.ChildrenField = CleanupChildrenField(field, this.ChildrenField);
clField.FilterValueField = this.FilterValueField;
clField.DefineNone = this.DefineNone;
}
}
public void InitializeWithField(Microsoft.SharePoint.SPField field)
{
CascadingLookupField clField = field as CascadingLookupField;
if (clField != null)
{
this.Url = clField.Url;
this.List = clField.List;
this.Field = clField.Field;
this.ParentField = clField.ParentField;
this.ChildrenField = clField.ChildrenField;
this.FilterValueField = clField.FilterValueField;
this.DefineNone = clField.DefineNone;
EnsureChildControls();
// Remove the current field from the FilterValueField list
ListItem item = ddlFilterValueField.Items.FindByValue(field.InternalName);
if (item != null)
{
ddlFilterValueField.Items.Remove(item);
}
}
}
