Hi I have a table which has a column AllowStockEdit which is a bit
I am trying to check is a user has edit access and then show edit and delete buttons on a radgridview
this is the code I am using
protected void AccessLevels(object sender, EventArgs e)
{
LINQDataContext dc = new LINQDataContext();
UserPermission up = dc.UserPermissions.Where(a => a.ID == (int)Session["Permission"]).SingleOrDefault();
up.AllowStockEdit = true;
}
/*show hide buttons */
protected void SelectedStockGridView_RowDataBound(Object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
// show the edit button when user has correct access level
if
{
Button btnEdit = (Button)e.Row.FindControl("ShowEditButton");
Button btndelete = (Button)e.Row.FindControl("ShowDeleteButton");
btnEdit.Visible = true;
btndelete.Visible = true;
}
}
}
I am trying to check to see if the user has edit access if they do show the buttons
any help appreciated
Something like that:
protected bool AccessLevels()
{
LINQDataContext dc = new LINQDataContext();
return dc.UserPermissions.Where(a => a.ID == (int)Session["Permission"]).SingleOrDefault().AllowStockEdit;
}
protected void SelectedStockGridView_RowDataBound(Object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
// show the edit button when user has correct access level
if(AccessLevels() == true)
{
Button btnEdit = (Button)e.Row.FindControl("ShowEditButton");
Button btndelete = (Button)e.Row.FindControl("ShowDeleteButton");
btnEdit.Visible = true;
btndelete.Visible = true;
}
}
}
Related
When i click on the tab page () a new settings page comes on but it's not populated with the info i already entered but it i click on a button (Navigation.PushModalAsync(new SettingsPage());) the page comes on and its populated with info I entered. is there a difference between the two?
//for tab page
<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:Bldg"
x:Class="Bldg.HomePage" >
<local:HistoryLogPage Title="Log"/>
<local:AddDrainsPage Title="Add"/>
<local:SettingsPage Title="Edit Settings"/>
<Label x:Name="drain1Label" />
</TabbedPage>
//for click button
void NextpageButton_Clicked(object sender, System.EventArgs e)
{
Navigation.PushModalAsync(new SettingsPage());
}
//SettingsPage
namespace Bldg
{
public partial class SettingsPage : ContentPage
{
public static string item, username;
public static string location1, location2;
bool is1Empty = string.IsNullOrEmpty(Settings.n1LocationSettings);
bool is2Empty = string.IsNullOrEmpty(Settings.n2LocationSettings);
List<string> list;
public SettingsPage()
{
InitializeComponent();
drainquantity();
list = new List<string>();
list.Add("1");
list.Add("2");
locationPicker1.SelectedIndexChanged += drain1Handle_SelectedIndexChanged;
locationPicker2.SelectedIndexChanged += drain2Handle_SelectedIndexChanged;
//nameofpickerinxamlfile.On<iOS().SetUpdateMode(UpdateMode.WhenFinished);
locationPicker1.On<iOS>().SetUpdateMode(UpdateMode.WhenFinished);
locationPicker2.On<iOS>().SetUpdateMode(UpdateMode.WhenFinished);
drainxPicker.SelectedItem = Settings.DrainquantitySettings;
locationPicker1.SelectedItem = Settings.n1LocationSettings;
locationPicker2.SelectedItem = Settings.n2LocationSettings;
nameEntry.Text = Settings.NameSettings;
clearButton.IsVisible = false;
drainlocationPicker2.IsEnabled = false;
drainxPicker.SelectedItem = Settings.DrainquantitySettings;
}
//this is fired when user changes or selects new selection
void drainxHandle_SelectedIndexChanged(object sender, System.EventArgs e)
{
//to get the value of user selected going to be use in switch; then save in a
variable
var drainx = drainxPicker.Items[drainxPicker.SelectedIndex];
item = (string)drainxPicker.SelectedItem;
bool isdrainxEmpty = string.IsNullOrEmpty(Settings.DrainquantitySettings);
if (isdrainxEmpty == true)
{
//switch for user selected in drainpicker
switch (drainx)
{
case "1":
n1Gridrow.IsVisible = true;
locationPicker1.IsVisible = true;
n2Gridrow.IsVisible = false;
if (is1Empty == true)
{
drainxPicker.IsEnabled = true;
}
else
drainxPicker.IsEnabled = false;
break;
case "2":
n1Gridrow.IsVisible = true;
n2Gridrow.IsVisible = true;
locationPicker2.IsEnabled = false;
break;
} //switch end
}
else
{
drainxPicker.IsEnabled = false;
nameEntry.IsEnabled = false;
n1Gridrow.IsVisible = true;
n2Gridrow.IsVisible = true;
locationPicker1.IsEnabled = false;
locationPicker2.IsEnabled = false;
settingsaveButton.IsVisible = false;
}
}
void n1Handle_SelectedIndexChanged(object sender, System.EventArgs e)
{
location1 = (string)locationPicker1.SelectedItem;
if (is1Empty == true)
{
locationPicker2.IsEnabled = true;
n2Label.IsVisible = true;
locationPicker2.Items.Remove((string)locationPicker1.SelectedItem);
}
drainxPicker.IsEnabled = false;
locationPicker1.IsEnabled = false;
}
void n2Handle_SelectedIndexChanged(object sender, System.EventArgs e)
{
location2 = (string)locationPicker2.SelectedItem;
if (is2Empty == true)
{
locationPicker2.IsEnabled = true;
}
drainxPicker.IsEnabled = false;
locationPicker2.IsEnabled = false;
}
void nxy1()
{
foreach (var location in list)
{
locationPicker1.Items.Add(location);
}
}
void nxy2()
{
foreach (var location in list)
{
locationPicker2.Items.Add(location);
}
}
void settingsaveButton_Clicked(object sender, System.EventArgs e)
{
bool isNameEmpty = string.IsNullOrEmpty(nameEntry.Text);
if (isNameEmpty == true)
{
DisplayAlert("Enter Name", "PLEASE", "OK");
}
else
{
Navigation.PushModalAsync(new HomePage());
//saving to Settings
Settings.n1LocationSettings = location1;
Settings.n2LocationSettings = location2;
Settings.NameSettings = username;
Settings.DrainquantitySettings = item;
drainxPicker.IsEnabled = false;
}
}
void entryNameHandle_Unfocused(object sender, Xamarin.Forms.FocusEventArgs e)
{
username = nameEntry.Text;
}
void clearHandle_Clicked(object sender, System.EventArgs e)
{
Settings.ClearAllData();
}
}
}
I expect that when i click on tabbed settings page, i go to the settings page with info entered populated. just like the button click it goes to settings page already populated with user entered.
Generally, tabbed settings page and pushed settings page is the same. They are all new fresh settings page.
From your code, we can see that you are setting the value of Picker by Settings plugin:
drainxPicker.SelectedItem = Settings.DrainquantitySettings;
locationPicker1.SelectedItem = Settings.n1LocationSettings;
locationPicker2.SelectedItem = Settings.n2LocationSettings;
So, whether the info entered will be populated or not when you go to the setting page is depending on the values in Settings.
For example:
If Settings.DrainquantitySettings; has value, then drainxPicker's info will be populated.
Check the Values in your Setting when you go to tabbed settings page and pushed settings page to find any difference.
Is there a way to multi-select in a Windows Tree View? Similar to the image below
I know that .NET currently doesn't have a multiselect treeview. It is treated as a wrapper around the win32 native treeview control. I would like to avoid the Treeview's Checkbox property if possible. Any suggestions is greatly appreciated!
Im gonna assume you're trying to avoid check boxes. Here is an example:
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
treeView1.DrawMode = OwnerDrawText;
treeView1.DrawNode += treeView1_DrawNode;
treeView1.NodeMouseClick += treeView1_NodeMouseClick;
}
private void treeView1_DrawNode(object sender, DrawTreeNodeEventArgs e) {
// Show checked nodes with an underline
using (SolidBrush br = new SolidBrush(e.Node.TreeView.BackColor))
e.Graphics.FillRectangle(br, e.Node.Bounds);
Font nodeFont = e.Node.NodeFont;
if (nodeFont == null) nodeFont = e.Node.TreeView.Font;
if (e.Node.Checked) nodeFont = new Font(nodeFont, FontStyle.Underline);
using (SolidBrush br = new SolidBrush(e.Node.TreeView.ForeColor))
e.Graphics.DrawString(e.Node.Text, nodeFont, br, e.Bounds);
if (e.Node.Checked) nodeFont.Dispose();
}
private void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e) {
if (Control.ModifierKeys == Keys.Shift && e.Node.Parent != null) {
// Extend selection
bool check = false;
foreach (TreeNode node in e.Node.Parent.Nodes) {
if (node.Checked) check = true;
node.Checked = check;
if (node == e.Node) break;
}
}
else {
unselectNodes(treeView1.Nodes);
e.Node.Checked = true;
}
}
This question has been answered here but I'll briefly answer your question. While it is true that Native Treeview control does not allow multiple selection, you can derive a subclass from it and override its behaviors.
Example code:
checkNodes method:
private void checkNodes(TreeNode node, bool check)
{
foreach (TreeNode child in node.Nodes)
{
if (child.Checked == true)
{
MessageBox.Show(child.Text);
}
//MessageBox.Show(child.Text);
checkNodes(child, check);
}
}
Treeview method after check:
private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
{
if (e.Action != TreeViewAction.Unknown)
{
if (busy) return;
busy = true;
try
{
TreeNode _node = e.Node;
checkNodes(e.Node, e.Node.Checked);
if (e.Node.Checked)
{
MessageBox.Show(e.Node.Text);
}
}
finally
{
busy = false;
}
}
}
It is not trivial to do so, however it can be done.
My borderless custom renderer for picker
public class BorderlessPickerRenderer : PickerRenderer
{
public static void Init() { }
protected override void OnElementChanged(ElementChangedEventArgs<Picker> e)
{
base.OnElementChanged(e);
if (e.OldElement == null)
{
Control.Background = null;
}
}
}
It will change the picker list text color as white. please see the screenshot
If you check the source code of PickerRenderer, you will find that the Dialog is totally generated in the code behind.
So here to set a Transparent(border-less) background, we can re-write the Click event of this control, for example:
public class BorderlessPickerRenderer : Xamarin.Forms.Platform.Android.PickerRenderer
{
private IElementController ElementController => Element as IElementController;
private AlertDialog _dialog;
protected override void OnElementChanged(ElementChangedEventArgs<Picker> e)
{
base.OnElementChanged(e);
if (e.NewElement == null || e.OldElement != null)
return;
Control.Click += Control_Click;
}
protected override void Dispose(bool disposing)
{
Control.Click -= Control_Click;
base.Dispose(disposing);
}
private void Control_Click(object sender, EventArgs e)
{
Picker model = Element;
var picker = new NumberPicker(Context);
if (model.Items != null && model.Items.Any())
{
picker.MaxValue = model.Items.Count - 1;
picker.MinValue = 0;
picker.SetDisplayedValues(model.Items.ToArray());
picker.WrapSelectorWheel = false;
picker.DescendantFocusability = DescendantFocusability.BlockDescendants;
picker.Value = model.SelectedIndex;
}
var layout = new LinearLayout(Context) { Orientation = Orientation.Vertical };
layout.AddView(picker);
ElementController.SetValueFromRenderer(VisualElement.IsFocusedPropertyKey, true);
var builder = new AlertDialog.Builder(Context);
builder.SetView(layout);
builder.SetTitle(model.Title ?? "");
builder.SetNegativeButton(global::Android.Resource.String.Cancel, (s, a) =>
{
ElementController.SetValueFromRenderer(VisualElement.IsFocusedPropertyKey, false);
// It is possible for the Content of the Page to be changed when Focus is changed.
// In this case, we'll lose our Control.
Control?.ClearFocus();
_dialog = null;
});
builder.SetPositiveButton(global::Android.Resource.String.Ok, (s, a) =>
{
ElementController.SetValueFromRenderer(Picker.SelectedIndexProperty, picker.Value);
// It is possible for the Content of the Page to be changed on SelectedIndexChanged.
// In this case, the Element & Control will no longer exist.
if (Element != null)
{
if (model.Items.Count > 0 && Element.SelectedIndex >= 0)
Control.Text = model.Items[Element.SelectedIndex];
ElementController.SetValueFromRenderer(VisualElement.IsFocusedPropertyKey, false);
// It is also possible for the Content of the Page to be changed when Focus is changed.
// In this case, we'll lose our Control.
Control?.ClearFocus();
}
_dialog = null;
});
_dialog = builder.Create();
_dialog.DismissEvent += (ssender, args) =>
{
ElementController?.SetValueFromRenderer(VisualElement.IsFocusedPropertyKey, false);
};
_dialog.Show();
_dialog.Window.SetBackgroundDrawable(new ColorDrawable(Android.Graphics.Color.Transparent));
}
}
Rendering image of this custom picker:
The font color and button's style can be modified as you need since you created this dialog by yourself. And the style of the dialog also depends on the style of your app.
I' have some navigation page and I want to override the color for the back button and my next button ( ToolbarItem )
I Already tried BarTextColor property but it change color for all navigation header text.
It's done in IOS, but I' not able to find a solution for android.
It works perfectly for the title but not for the Icons.
Here my code :
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
var page = this.Element as NavigationPage;
if (page != null && toolbar != null)
{
toolbar.SetTitleTextColor(Color.Black.ToAndroid());
if (toolbar.NavigationIcon != null)
toolbar.NavigationIcon.SetColorFilter(Color.Green.ToAndroid(), Android.Graphics.PorterDuff.Mode.Multiply);
if (toolbar.OverflowIcon != null)
toolbar.OverflowIcon.SetColorFilter(Color.Green.ToAndroid(), Android.Graphics.PorterDuff.Mode.Multiply);
}
}
I' have some navigation page and I want to override the color for the back button and my next button ( ToolbarItem )
Your next button is a ToolbarItem, which is defined by yourself. So it won't be a problem for you to customize it. The difficult part lies in the back button, because it is offered by Xamarin.Forms. You need to override the NavigationPageRenderer to change the color:
public class MyNavigationPageRenderer : NavigationPageRenderer
{
protected override void OnElementChanged(ElementChangedEventArgs<NavigationPage> e)
{
base.OnElementChanged(e);
if (e.NewElement != null)
{
var navController = (INavigationPageController)e.NewElement;
navController.PushRequested += NavController_PushRequested;
navController.PopRequested += NavController_PopRequested;
}
}
private void NavController_PopRequested(object sender, Xamarin.Forms.Internals.NavigationRequestedEventArgs e)
{
Device.StartTimer(TimeSpan.FromMilliseconds(220), () =>
{
ChangeIconColor();
return false;
});
}
private void NavController_PushRequested(object sender, Xamarin.Forms.Internals.NavigationRequestedEventArgs e)
{
ChangeIconColor();
}
private void ChangeIconColor()
{
int count = this.ViewGroup.ChildCount;
var toolbar = GetToolbar();
if (toolbar.NavigationIcon != null)
{
var drawable = (toolbar.NavigationIcon as DrawerArrowDrawable);
drawable.Color = Resource.Color.material_grey_850;//set the navigation icon color here
}
}
private AToolbar GetToolbar()
{
for (int i = 0; i < this.ViewGroup.ChildCount; i++)
{
var child = this.ViewGroup.GetChildAt(i);
if (child is AToolbar)
{
return (AToolbar)child;
}
}
return null;
}
}
A little explanation to the codes above: PushRequest and PopRequest fires when you push and pop a new page to the navigation page and it is the perfect time for you to customize the existing Toolbar's NavigationIcon. So first find the Toolbar using GetToolbar then change the icon color by ChangeIconColor.
I am trying to re size the data grid view in windows form. There are two data grid view on my form and both are fed from the database. Is there any was I can resize the data grid view on the left so that it grows with the content length and width and the data grid view shrinks with the content.
Given below is my code
private void show_Click(object sender, EventArgs e)
{
int rowIndex = Convert.ToInt32(productGridView.SelectedRows[0].Cells[2].Value);
//IEnumerable<Supplier> supplierQuery = from supplier in newNorthWindContext.Suppliers
// where supplier.SupplierID == rowIndex
// select new {} supplier;
IEnumerable<Supplier> supplierQuery = newNorthWindContext.Suppliers.Where(supliers => supliers.SupplierID == rowIndex);
supplierDataGridView.DataSource = ((ObjectQuery)supplierQuery).Execute(MergeOption.AppendOnly);
supplierDataGridView.Columns["SupplierID"].Visible = false;
supplierDataGridView.Columns["ContactTitle"].Visible = false;
supplierDataGridView.Columns["Address"].Visible = false;
supplierDataGridView.Columns["City"].Visible = false;
supplierDataGridView.Columns["Region"].Visible = false;
supplierDataGridView.Columns["PostalCode"].Visible = false;
supplierDataGridView.Columns["ContactTitle"].Visible = false;
supplierDataGridView.Columns["Address"].Visible = false;
//supplierDataGridView.AutoResizeColumns();
supplierDataGridView.AutoSizeColumnsMode =
DataGridViewAutoSizeColumnsMode.AllCells;
}
private void categoryDropDown_SelectedIndexChanged(object sender, EventArgs e)
{
Category category = (Category)this.categoryDropDown.SelectedItem;
try
{
productGridView.DataSource = category.Products;
productGridView.Columns["SupplierID"].Visible = false;
productGridView.Columns["CategoryID"].Visible = false;
productGridView.Columns["Category"].Visible = false;
productGridView.Columns["Order_Details"].Visible = false;
productGridView.Columns["Supplier"].Visible = false;
productGridView.AllowUserToDeleteRows = true;
productGridView.AutoResizeColumns();
productGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void ProductDetail_Load(object sender, EventArgs e)
{
newNorthWindContext = new NorthwindEntities();
productGridView.AutoSizeColumnsMode =
DataGridViewAutoSizeColumnsMode.AllCells;
IEnumerable<Category> categoryQuery = from category in newNorthWindContext.Categories.Include("Products")
orderby category.CategoryName
select category;
try
{
this.categoryDropDown.DataSource = ((ObjectQuery)categoryQuery).Execute(MergeOption.AppendOnly);
this.categoryDropDown.DisplayMember = "categoryName";
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
This solves the issue.
supplierDataGridView.Width = supplierDataGridView.Columns.GetColumnsWidth(DataGridViewElementStates.Visible)+4;
at the end of show_Click you should have something like
supplierDataGridView.Width = supplierDataGridView.Columns.Sum(x => x.Width) + supplierDataGridView.RowHeadersWidth + 2;
supplierDataGridView.Height = supplierDataGridView.GetRowDisplayRectangle(supplierDataGridView.NewRowIndex, true).Bottom + supplierDataGridView.GetRowDisplayRectangle(supplierDataGridView.NewRowIndex, false).Height;
I hope this helps!