Hi Maher,
Thank you for writing.
Yes, it is possible to achieve the desired behavior. Please note, however, this type of functionality is not provided out of the box. In order to accomplish your
task you would need to sync the labels with the current
PageSize and total rows count values. If I have understood correctly you would also like the text box to display the page size.
In order the text box to be functional so that the
RadGridView.PageSize changes whenever there is a new input, we are also going to need to unsubscribe it from the
KeyDown event and implement our own delegate. Please see my code snippet below:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
new RadControlSpyForm().Show();
this.radGridView1.DataSource = this.GetData(1000);
this.radGridView1.EnableFiltering = true;
this.radGridView1.EnablePaging = true;
this.radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
this.radGridView1.Rows.CollectionChanged += Rows_CollectionChanged;
this.radGridView1.PageChanged += radGridView1_PageChanged;
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
CommandBarTextBox pageNumberTextBox = this.radGridView1.GridViewElement.PagingPanelElement.PageNumberTextBox;
EventInfo ei = pageNumberTextBox.GetType().GetEvent("KeyDown", BindingFlags.Public | BindingFlags.Instance);
if (ei != null)
{
Type delType = ei.EventHandlerType;
MethodInfo mi = this.radGridView1.GridViewElement.PagingPanelElement.GetType().GetMethod("PageNumberTextBox_KeyDown", BindingFlags.NonPublic | BindingFlags.Instance);
if (mi != null)
{
Delegate del = Delegate.CreateDelegate(delType, this.radGridView1.GridViewElement.PagingPanelElement, mi);
ei.RemoveEventHandler(pageNumberTextBox, del);
this.radGridView1.GridViewElement.PagingPanelElement.PageNumberTextBox.KeyDown += PageNumberTextBox_KeyDown;
}
}
}
protected override void OnShown(EventArgs e)
{
this.ChangePageLabels();
}
private void PageNumberTextBox_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode != Keys.Enter)
{
return;
}
int pageSize = -1;
if (int.TryParse(((RadTextBoxItem)sender).Text, out pageSize))
{
this.radGridView1.PageSize = pageSize;
this.ChangePageLabels();
}
}
private void Rows_CollectionChanged(object sender, Telerik.WinControls.Data.NotifyCollectionChangedEventArgs e)
{
this.ChangePageLabels();
}
private void radGridView1_PageChanged(object sender, EventArgs e)
{
this.ChangePageLabels();
}
private void ChangePageLabels()
{
this.radGridView1.GridViewElement.PagingPanelElement.PageLabel.Text = "Page Size";
this.radGridView1.GridViewElement.PagingPanelElement.NumberOfPagesLabel.Text = this.radGridView1.Rows.Count + "";
this.radGridView1.GridViewElement.PagingPanelElement.PageNumberTextBox.TextBoxElement.TextBoxItem.Text = this.radGridView1.PageSize + "";
}
private DataTable GetData(int count)
{
DataTable dt = new DataTable();
dt.Columns.Add("Name", typeof(string));
dt.Columns.Add("Age", typeof(int));
dt.Columns.Add("Date", typeof(DateTime));
dt.Columns.Add("Bool", typeof(bool));
for (int i = 0; i < count; i++)
{
dt.Rows.Add("Name " + i, i, DateTime.Now.AddMinutes(i), i % 2 == 0 ? true : false);
}
return dt;
}
}
Regarding your other question about the
ChildRows, this property returns the rows in the current template. When paging is enabled it will be the value of the
PageSize property. If you apply a filter it will take into consideration the filtered rows as well. More information is available here:
Rows vs ChildRows.
I am also sending you a short video showing the result on my end.
I hope this helps. Should you have further questions please do not hesitate to write back.
Regards,
Hristo Merdjanov
Telerik
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