Add the capability to initialize individual command buttons

Jaime Alvarez

created 17 years ago

This code is very succefully to me…
you can disable the command buttons on runtime conditionally… and enable or disable edit columns conditionally
best wishes
James
  protected void ASPxGridViewRes_HtmlRowPrepared(object sender, ASPxGridViewTableRowEventArgs e)
    {
        int commandColumnIndex = -1;
        for (int i = 0; i < (sender as ASPxGridView).Columns.Count; i++)
            if ((sender as ASPxGridView).Columns[i] is GridViewCommandColumn)
            {
                commandColumnIndex = i;
                break;
            }
        DevExpress.Web.ASPxGridView.Rendering.GridViewTableCommandCell cell = e.Row.Cells[commandColumnIndex] as DevExpress.Web.ASPxGridView.Rendering.GridViewTableCommandCell;
        if (cell != null)
        {
            for (int i = 0; i < cell.Controls.Count; i++)
            {
                DevExpress.Web.ASPxGridView.Rendering.GridViewCommandColumnButtonControl button = cell.Controls[i] as DevExpress.Web.ASPxGridView.Rendering.GridViewCommandColumnButtonControl;
                if (button == null) continue;
                if (button.Text == "Edit")
                {
                    if (***your condition**** )
                    {
                        DevExpress.Web.ASPxClasses.Internal.InternalHyperLink hyperlink = button.Controls[0] as DevExpress.Web.ASPxClasses.Internal.InternalHyperLink;
                        hyperlink.Enabled = true;
                        hyperlink.Text = "Edit";
                    }
                    else
                    {
                        DevExpress.Web.ASPxClasses.Internal.InternalHyperLink hyperlink = button.Controls[0] as DevExpress.Web.ASPxClasses.Internal.InternalHyperLink;
                        hyperlink.Enabled = false;
                        hyperlink.Text = "—";
                    }
                }
            }
        }
    }
    protected void ASPxGridViewRes_CellEditorInitialize(object sender, ASPxGridViewEditorEventArgs e)
    {
        if (e.Column.FieldName == "your column")
            {
                e.Editor.ReadOnly = false;
                e.Editor.BackColor = System.Drawing.Color.Orange;
            }
        if (e.Column.FieldName == "another column")
            if (" another condition")
            {
                e.Editor.ReadOnly = false;
                e.Editor.BackColor = System.Drawing.Color.Orange;
            }
    }

Comments (2)

DevExpress Support Team 17 years ago

Hi James,
Thank you for sharing your code with us. We will certainly create a tutorial project using a similar code and publish it at:
Tutorials
Thanks,
Plato

Andrew (DevExpress) 16 years ago

We've added a new CommandButtonInitialize event to make sure you are able to change command button controls visibility and disable/enable them easily.
The following example illustrates how to make every third "Select" button/link invisible and every second - disabled:
protected void ASPxGridView1_CommandButtonInitialize(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewCommandButtonEventArgs e) {
    if (e.Button.ButtonType != DevExpress.Web.ASPxGridView.ColumnCommandButtonType.Select) return;
    e.Visible = e.VisibleIndex % 3 != 1;
    e.Enabled = e.VisibleIndex % 2 != 1;
}
Thank you,
Andrew R&D.

Add the capability to initialize individual command buttons

Recently viewed tickets