Hide Row in DataGridView with Binding not working in my project

Question

0.00/5 (No votes)

See more:

I'm facing one problem regarding datagridview row hiding in my project. The code I've pasted works in saperate test project but, not in my project. Please help me on this.

The code i'm testing

C#

public partial class frmTestGirdBinding : Form
{
    CustomDataCollection cdata = new CustomDataCollection();
    Random rnd = new Random();
    public frmTestGirdBinding()
    {
        InitializeComponent();
    }

    private void frmTestGirdBinding_Load(object sender, EventArgs e)
    {
        BindingSource bindingSource1 = new BindingSource();
        bindingSource1.DataSource = cdata;
        dataGridView1.DataSource = bindingSource1;
        //bindingSource1.Filter = "Srno = 3"; not working


        CurrencyManager cm = (CurrencyManager)BindingContext[bindingSource1.DataSource];
        cm.SuspendBinding();
        //InVisible the rows
        dataGridView1.Rows[2].Visible = false;
        dataGridView1.Rows[3].Visible = false;
        cm.ResumeBinding();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        for (int i = 0; i < cdata.Count; i++)
        {
            cdata[i].Reading = (float)rnd.NextDouble();
        }
        dataGridView1.Refresh(); //without this all rows are not updating
    }
}

class CustomDataCollection : BindingList<CustomData>
{
    public CustomDataCollection()
    {
        this.Add(new CustomData() { SrNo = 1, Name = "A", Reading = 11.11F });
        this.Add(new CustomData() { SrNo = 2, Name = "B", Reading = 22.11F });
        this.Add(new CustomData() { SrNo = 3, Name = "C", Reading = 33.11F });
        this.Add(new CustomData() { SrNo = 4, Name = "D", Reading = 44.11F });
        this.Add(new CustomData() { SrNo = 5, Name = "E", Reading = 55.11F });
        this.Add(new CustomData() { SrNo = 6, Name = "F", Reading = 66.11F });
        this.Add(new CustomData() { SrNo = 7, Name = "G", Reading = 77.11F });
    }
}
class CustomData : INotifyPropertyChanged
{
    int srno;

    public int SrNo
    {
        get { return srno; }
        set { srno = value; OnPropertyChanged("SrNo"); }
    }

    string name;

    public string Name
    {
        get { return name; }
        set { name = value; OnPropertyChanged("Name"); }
    }

    float reading;

    public float Reading
    {
        get { return reading; }
        set { reading = value; OnPropertyChanged("Reading"); }
    }
    #region INotifyPropertyChanged Members

    public event PropertyChangedEventHandler PropertyChanged;

    private void OnPropertyChanged(string propertyName)
    {
        PropertyChangedEventHandler handler = PropertyChanged;

        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
    #endregion

}

Please help me in this.

Posted 11-Nov-13 23:24pm

mangesh.raykar

Add a Solution

Comments

Ankur Ramanuj 18-Nov-13 4:38am

try it in databound....

protected void GridView1_DataBound(object sender, EventArgs e)
{
if (GridView1.Rows.Count == 1)
GridView1.Rows[0].Visible = false;
}

mangesh.raykar 18-Nov-13 23:21pm

Thanks for your reply. DataBindingComplete event solves my problem.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

mangesh.raykar · Accepted Answer · 2013-11-18T17:22:00

Searching on this issue solve the problem by adding DataBindingComplete event and hide the specific row. DataBindingComplete is fired 2 times, 1 at the time of binding and 2nd after form_load event complete.

C#

public partial class frmTestGirdBinding : Form
{
    CustomDataCollection cdata = new CustomDataCollection();
    Random rnd = new Random();
    public frmTestGirdBinding()
    {
        InitializeComponent();
        this.dataGridView1.DataBindingComplete += new System.Windows.Forms.DataGridViewBindingCompleteEventHandler(this.dataGridView1_DataBindingComplete);
    }

    private void frmTestGirdBinding_Load(object sender, EventArgs e)
    {
        BindingSource bindingSource1 = new BindingSource();
        bindingSource1.DataSource = cdata;
        dataGridView1.DataSource = bindingSource1;            

    }

    private void button1_Click(object sender, EventArgs e)
    {
        for (int i = 0; i < cdata.Count; i++)
        {
            cdata[i].Reading = (float)rnd.NextDouble();
        }
        dataGridView1.Refresh(); //without this all rows are not updating
    }

    private void dataGridView1_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
    {
        //InVisible the rows
        dataGridView1.Rows[2].Visible = false;
        dataGridView1.Rows[3].Visible = false;
    }
}

class CustomDataCollection : BindingList<customdata>
{
    public CustomDataCollection()
    {
        this.Add(new CustomData() { SrNo = 1, Name = "A", Reading = 11.11F });
        this.Add(new CustomData() { SrNo = 2, Name = "B", Reading = 22.11F });
        this.Add(new CustomData() { SrNo = 3, Name = "C", Reading = 33.11F });
        this.Add(new CustomData() { SrNo = 4, Name = "D", Reading = 44.11F });
        this.Add(new CustomData() { SrNo = 5, Name = "E", Reading = 55.11F });
        this.Add(new CustomData() { SrNo = 6, Name = "F", Reading = 66.11F });
        this.Add(new CustomData() { SrNo = 7, Name = "G", Reading = 77.11F });
    }
}
class CustomData : INotifyPropertyChanged
{
    int srno;

    public int SrNo
    {
        get { return srno; }
        set { srno = value; OnPropertyChanged("SrNo"); }
    }

    string name;

    public string Name
    {
        get { return name; }
        set { name = value; OnPropertyChanged("Name"); }
    }

    float reading;

    public float Reading
    {
        get { return reading; }
        set { reading = value; OnPropertyChanged("Reading"); }
    }
    #region INotifyPropertyChanged Members

    public event PropertyChangedEventHandler PropertyChanged;

    private void OnPropertyChanged(string propertyName)
    {
        PropertyChangedEventHandler handler = PropertyChanged;

        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
    #endregion

}</customdata>