Declined
Last Updated: 18 Jun 2018 13:24 by ADMIN
ADMIN
Stefan
Created on: 05 Jan 2017 07:49
Category: GridView
Type: Bug Report
0
FIX. RadGridView - menu item added to the filtering context menu cannot be set as checked
To reproduce, add menu item in the filtering context menu and upon click, set it as checked. Note that the filtering cell text should also take the custom menu item text or there should be an approach to set it.
Workaround: uncomment the commented code below.

protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            AddGrid();

            DataTable dt = new DataTable();
            dt.Columns.Add("Id", typeof(int));
            dt.Columns.Add("Name", typeof(string));

            for (int i = 0; i < 5; i++)
            {
                dt.Rows.Add(i, "Item" + i);
            }
            dt.Rows.Add(5, null);
            dt.Rows.Add(6, "");

            radGridView1.ShowHeaderCellButtons = true;
            this.radGridView1.DataSource = dt;
            this.radGridView1.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill;
            this.radGridView1.EnableFiltering = true;
            this.radGridView1.EnableCustomFiltering = true;
            //radGridView1.ContextMenuOpening += radGridView1_ContextMenuOpening;
        }

        private void radGridView1_ContextMenuOpening(object sender, Telerik.WinControls.UI.ContextMenuOpeningEventArgs e)
        {
            GridFilterCellElement filterCell = e.ContextMenuProvider as GridFilterCellElement;
            GridViewDataColumn dataCol = (GridViewDataColumn)filterCell.ColumnInfo;
            if (filterCell != null)
            {
                if (filterCell.ColumnInfo.Name == "Name")
                {
                    RadMenuItem isNullMenuItem = new RadMenuItem();
                    isNullMenuItem.Click += customMenuItem_Click;
                    isNullMenuItem.Text = "My IsNull";
                    isNullMenuItem.Tag = filterCell.ColumnInfo.Name;
                    e.ContextMenu.Items.Add(isNullMenuItem);

                    RadMenuItem isNotNullMenuItem = new RadMenuItem();
                    isNotNullMenuItem.Click += customMenuItem_Click;
                    isNotNullMenuItem.Text = "My IsNotNull";
                    isNotNullMenuItem.Tag = filterCell.ColumnInfo.Name;
                    e.ContextMenu.Items.Add(isNotNullMenuItem);

                    bool isCustomFilter = (dataCol.FilterDescriptor != null &&
                        dataCol.FilterDescriptor is CompositeFilterDescriptor &&
                        dataCol.FilterDescriptor.Expression.Contains("NULL"));

                    foreach (RadMenuItem item in e.ContextMenu.Items)
                    {
                        if (item.Text == "Is null" || item.Text == "Is not null")
                        {
                            item.Visibility = Telerik.WinControls.ElementVisibility.Collapsed;
                        }
                        //if (isCustomFilter)
                        //{
                        //    item.IsChecked = false;
                        //}
                    }
                    //if (isCustomFilter)
                    //{
                    //    if (((CompositeFilterDescriptor)dataCol.FilterDescriptor).LogicalOperator == FilterLogicalOperator.And)
                    //    {
                    //        isNotNullMenuItem.IsChecked = true;
                    //    }
                    //    else
                    //    {
                    //        isNullMenuItem.IsChecked = true;
                    //    }
                    //}
                }
            }
        }

        private void customMenuItem_Click(object sender, EventArgs e)
        {
            RadMenuItem clickedItem = (RadMenuItem)sender;
            string columnName = clickedItem.Tag.ToString();
            radGridView1.Columns[columnName].FilterDescriptor = null;

            FilterOperator filterOperator = clickedItem.Text.Contains("Not") ? FilterOperator.IsNotEqualTo : FilterOperator.IsEqualTo;
            FilterLogicalOperator logicalOperator = clickedItem.Text.Contains("Not") ? FilterLogicalOperator.And : FilterLogicalOperator.Or;

            CompositeFilterDescriptor compositeFilter = new CompositeFilterDescriptor();
            compositeFilter.FilterDescriptors.Add(new FilterDescriptor(columnName, filterOperator, ""));
            compositeFilter.FilterDescriptors.Add(new FilterDescriptor(columnName, filterOperator, null));
            compositeFilter.LogicalOperator = logicalOperator;
            compositeFilter.IsFilterEditor = true;
            this.radGridView1.FilterDescriptors.Add(compositeFilter);

            clickedItem.IsChecked = true;
        }
(Total attached files size should be smaller than 20mb. Allowed extensions: .zip, .rar, .jpg, .png, .gif)
1 comment
ADMIN
Dimitar
Posted on: 18 Jun 2018 13:24
This is not an issue because each time a new item is created. You need to store the state locally:

private bool myChecked = false;
private bool myChecked2 = false;
private void radGridView1_ContextMenuOpening(object sender, Telerik.WinControls.UI.ContextMenuOpeningEventArgs e)
{
    GridFilterCellElement filterCell = e.ContextMenuProvider as GridFilterCellElement;
    GridViewDataColumn dataCol = (GridViewDataColumn)filterCell.ColumnInfo;
    if (filterCell != null)
    {
        if (filterCell.ColumnInfo.Name == "Name")
        {
            RadMenuItem isNullMenuItem = new RadMenuItem();
            isNullMenuItem.Click += customMenuItem_Click;
            isNullMenuItem.Text = "My IsNull";
            isNullMenuItem.Tag = filterCell.ColumnInfo.Name;
            isNullMenuItem.IsChecked = myChecked;
            e.ContextMenu.Items.Add(isNullMenuItem);

            RadMenuItem isNotNullMenuItem = new RadMenuItem();
            isNotNullMenuItem.IsChecked = myChecked2;
            isNotNullMenuItem.Click += customMenuItem_Click;
            isNotNullMenuItem.Text = "My IsNotNull";
            isNotNullMenuItem.Tag = filterCell.ColumnInfo.Name;
            e.ContextMenu.Items.Add(isNotNullMenuItem);

            bool isCustomFilter = (dataCol.FilterDescriptor != null &&
                dataCol.FilterDescriptor is CompositeFilterDescriptor &&
                dataCol.FilterDescriptor.Expression.Contains("NULL"));

            foreach (RadMenuItem item in e.ContextMenu.Items)
            {
                if (item.Text == "Is null" || item.Text == "Is not null")
                {
                    item.Visibility = Telerik.WinControls.ElementVisibility.Collapsed;
                }
             
            }
            
        }
    }
}

private void customMenuItem_Click(object sender, EventArgs e)
{
    RadMenuItem clickedItem = (RadMenuItem)sender;
    if (clickedItem.Text == "My IsNull")
    {
        myChecked = !myChecked;
        clickedItem.IsChecked = myChecked;
    }
    else
    {
        myChecked2 = !myChecked;
        clickedItem.IsChecked = myChecked2;
    }
}