Re: ScrollBars.None prevents to show the last row of DataGridView

Please file a bug report with a complete test case.

http://mono-project.com/Bugs


luisrl wrote:
> 
> Objetive:
> 
> Show the last row of the DataGridView automatically after adding a new
> row.
> 
> Problem:
> 
> When DataGridView.ScrollBars = Scrollbars.None, then the DataGridView does
> not show the last row.
> 
> The objetive worked in:
> 
> Windows 2000, XP, Vista, 7, etc.
> .NET Framework 2.0, 3.5 and 4.0
> 
> The problem happened in:
> 
> Ubuntu 10.04
> Mono 2.4.4
> 
> Windows Server 2008
> Mono 2.6.7
> 
> How to use the code:
> 
> Press the button called "Add" to add a row.
> Keep pressing the button called "Add" to see how the list is growing and
> the grid keeps showing the last row when the scrollbar is visible. It
> works fine.
> 
> Now, press the button called "Bars" to set the ScrollBars to
> "Scrollbars.None". The Scrollbar will disappear.
> Continue pressing the button called "Add" to see that the grid won't show
> the last row.
> 
> Reason:
> 
> For user interface purposes, I need to set ScrollBars.None; but when I set
> that, the objetive fails in mono.
> 
> Any suggestion about how to solve it?
> 
> Thanks
> 
> Code:
> 
> using System;
> using System.Collections.Generic;
> using System.ComponentModel;
> using System.Data;
> using System.Drawing;
> using System.Linq;
> using System.Text;
> using System.Windows.Forms;
> 
> namespace WindowsFormsApplication1
> {
>     public partial class Form1 : Form
>     {
>         DataGridView Grid = new DataGridView();
>         DataTable Dt = new DataTable();
> 
>         public Form1()
>         {
>             InitializeComponent();
>         }
> 
>         private void Form1_Load(object sender, EventArgs e)
>         {
>             //Resize the form
> 
>             this.Height = 250;
>             this.Width = 400;
> 
>             //Create the columns of the table
> 
>             Dt.Columns.Add("One", typeof(string));
>             Dt.Columns.Add("Two", typeof(string));
> 
>             //Set the grid
> 
>             Grid.AllowUserToAddRows = false;
>             Grid.AllowUserToDeleteRows = false;
>             Grid.Height = 150;
>             Grid.Location = new Point(50, 0);
>             Grid.Width = 300;
> 
>             Button BtnAdd = new Button();
> 
>             BtnAdd.Height = 25;
>             BtnAdd.Location = new Point(50, 175);
>             BtnAdd.Width = 50;
>             BtnAdd.Text = "Add";
> 
>             BtnAdd.Click += new System.EventHandler(this.BtnAdd_Click);
> 
>             //Create the "What if..." button
> 
>             Button BtnIf = new Button();
> 
>             BtnIf.Height = 25;
>             BtnIf.Location = new Point(150, 175);
>             BtnIf.Width = 50;
>             BtnIf.Text = "Bars";
> 
>             BtnIf.Click += new System.EventHandler(this.BtnIf_Click);
> 
>             //Add the controls to the form
> 
>             this.Controls.Add(Grid);
>             this.Controls.Add(BtnAdd);
>             this.Controls.Add(BtnIf);
> 
>             //Bind
> 
>             Grid.DataSource = Dt;
>         }
> 
>         private void Add()
>         {
>             //Add a row
> 
>             DataRow Row = Dt.NewRow();
> 
>             Row["One"] = "Can you";
>             Row["Two"] = "see me?";
> 
>             Dt.Rows.Add(Row);
> 
>             if (Grid.Rows.Count > 0)
>             {
>                 int Count = Grid.Rows.Count;
> 
>                 Grid.CurrentCell = Grid.Rows[Count - 1].Cells["One"];
>             }
>         }
> 
>         private void BtnAdd_Click(object sender, EventArgs e)
>         {
>             try
>             {
>                 Add();
>             }
>             catch (Exception ex)
>             {
>                 MessageBox.Show(ex.Message);
>             }
>         }
> 
>         private void BtnIf_Click(object sender, EventArgs e)
>         {
>             try
>             {
>                 if (Grid.ScrollBars == ScrollBars.Both)
>                 {
>                     Grid.ScrollBars = ScrollBars.None;
>                 }
>                 else
>                 {
>                     Grid.ScrollBars = ScrollBars.Both;
>                 }
>             }
>             catch (Exception ex)
>             {
>                 MessageBox.Show(ex.Message);
>             }
>         }
>     }
> }
> 

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