AutoSizeColumnsMode Fill Issue

[Gérald]

Hi,

I have a gridView with 2 columns, and the AutoSizeColumnsMode set to Fill.
The problem is that each time I refresh the data (in setting the datasource property with a new bindingList), the width of the second column is reduced by 1 pixel (the first column is growing).

Is this a known bug ?
Is there a workaround ?

[Richard Slade]

Hello,

Unless I have misunderstood I have been unable to replicate your issue. I have incuded a small sample below

Designer File

partial class Form1
{
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.IContainer components;
    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }
    #region Windows Form Designer generated code
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
        this.radGridView1 = new Telerik.WinControls.UI.RadGridView();
        this.radButton1 = new Telerik.WinControls.UI.RadButton();
        ((System.ComponentModel.ISupportInitialize)(this.radGridView1)).BeginInit();
        ((System.ComponentModel.ISupportInitialize)(this.radButton1)).BeginInit();
        this.SuspendLayout();
        //
        // radGridView1
        //
        this.radGridView1.Location = new System.Drawing.Point(12, 12);
        this.radGridView1.Name = "radGridView1";
        this.radGridView1.Size = new System.Drawing.Size(260, 188);
        this.radGridView1.TabIndex = 0;
        this.radGridView1.Text = "radGridView1";
        //
        // radButton1
        //
        this.radButton1.Location = new System.Drawing.Point(142, 206);
        this.radButton1.Name = "radButton1";
        this.radButton1.Size = new System.Drawing.Size(130, 24);
        this.radButton1.TabIndex = 1;
        this.radButton1.Text = "ReBind and BestFit";
        this.radButton1.Click += new System.EventHandler(this.radButton1_Click);
        //
        // Form1
        //
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(284, 240);
        this.Controls.Add(this.radButton1);
        this.Controls.Add(this.radGridView1);
        this.Name = "Form1";
        this.Text = "Form1";
        this.Load += new System.EventHandler(this.Form1_Load);
        ((System.ComponentModel.ISupportInitialize)(this.radGridView1)).EndInit();
        ((System.ComponentModel.ISupportInitialize)(this.radButton1)).EndInit();
        this.ResumeLayout(false);
    }
    #endregion
    private Telerik.WinControls.UI.RadGridView radGridView1;
    private Telerik.WinControls.UI.RadButton radButton1;
}

Form1.cs

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;
using Telerik.WinControls.UI;


    public partial class Form1 : Form
    {
        private BindingList<Person> people = new BindingList<Person>();
        private int counter = 1;

        public Form1()
        {
            InitializeComponent();
            this.radGridView1.AutoGenerateColumns = true;
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void LoadData()
        {
            int max = counter + 10;
            people.Clear();
            for (int i = counter; counter <= max; i++)
            {
                people.Add(new Person("Name " + counter.ToString(), "Description " + counter.ToString()));
                counter++;
            }
            this.radGridView1.DataSource = people;
        }

        private void radButton1_Click(object sender, EventArgs e)
        {
            LoadData();

            foreach (GridViewDataColumn column in this.radGridView1.Columns)
            {column.BestFit();}

            this.radGridView1.CurrentRow = this.radGridView1.Rows[0];
        }
    }

    public class Person
    {
        public Person(string name, string description)
        {
            this.Name = name;
            this.Description = description;
        }

        public string Name
        { get; set; }

        public string Description
        { get; set; }
    }

Let me know if you need further information
Richard

[Richard Slade]

Re-posting Form1.cs as I didn't include AutoSizeColumnsMode

Form1.cs

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;
using Telerik.WinControls.UI;


    public partial class Form1 : Form
    {
        private BindingList<Person> people = new BindingList<Person>();
        private int counter = 1;

        public Form1()
        {
            InitializeComponent();
            this.radGridView1.AutoGenerateColumns = true;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
        }

        private void LoadData()
        {
            int max = counter + 10;
            people.Clear();
            for (int i = counter; counter <= max; i++)
            {
                people.Add(new Person("Name " + counter.ToString(), "Description " + counter.ToString()));
                counter++;
            }
            this.radGridView1.DataSource = people;
        }

        private void radButton1_Click(object sender, EventArgs e)
        {
            LoadData();

            foreach (GridViewDataColumn column in this.radGridView1.Columns)
            {column.BestFit();}

            this.radGridView1.CurrentRow = this.radGridView1.Rows[0];
        }
    }

    public class Person
    {
        public Person(string name, string description)
        {
            this.Name = name;
            this.Description = description;
        }

        public string Name
        { get; set; }

        public string Description
        { get; set; }
    }

[Gérald]

Thank you for your response..

To reproduce the behaviour, set the ShowRowHeaderColumn property to False, and don't use the BestFit method :

private void Form1_Load(object sender, EventArgs e)
        {
            this.radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
            this.radGridView1.ShowRowHeaderColumn = false;
        }

private void radButton1_Click(object sender, EventArgs e)
        {
            LoadData();
            this.radGridView1.CurrentRow = this.radGridView1.Rows[0];
        }

[Richard Slade]

Hello,

Yes, I can replicate your issue. There would be two workarounds for this:

1: Continue to use the BestFitColumns method on each column
or
2: Provide a MaxWidth for the first column

LoadData();
this.radGridView1.Columns[0].MaxWidth = 60;

I hope that this helps, but if you require further information, please let me know
Regards,
Richard

[Gérald]

Ok, the MaxWidth solution can fit my needs (with MinWidth to assure that the column won't grow)..

Thanks,
Gérald

[Richard Slade]

You're welcome. Please remember to mark helpful posts as answer
Thanks
Richard

[Stefan]

Hello guys, 

Thank you for writing.

Indeed, we currently experience such an issue. I have added it into out PITS system and we are going to address it in a future release. At this link you can subscribe for its status updates.

@Gérald, I have updated your Telerik points for this report.

Should you need anything else, do not hesitate to contact us.
 
Regards,
Stefan
the Telerik team