Button click event is not firing in custom control

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C#

ASP

ASP.NET

custom-controls

Hello,

I am developing a custom usercontrol. I have a button in that control. I assigned a event for that button. After registering the control with aspx page i am able to see that event in event list of that control. But onclick of that button event is not firing. Below is the code i have written.


Code in Custom control :

[DefaultProperty("Text")]
    [ToolboxData("<{0}:Register  runat="server">")]
    public class Register : CompositeControl
    {
        Label lblID;
        Label lblIDCol;
        TextBox txtID;

        Label lblName;
        Label lblNameCol;
        TextBox txtName;

        Button btnSave;
        public delegate void del(object sender, EventArgs e);
        public event del Save;

        public string EmpID
        {
            get { return txtID.Text; }
            set { txtID.Text = value; }
        }

        public string Name
        {
            get { return txtName.Text; }
            set { txtName.Text = value; }
        }

        protected override void CreateChildControls()
        {
            Controls.Clear();
            lblID = new Label();
            lblID.Text = "EmployeeID";
            lblIDCol = new Label();
            lblIDCol.Text = ":";
            txtID = new TextBox();
            txtID.ID = "txtID";

            lblName = new Label();
            lblName.Text = "Name";
            lblNameCol = new Label();
            lblNameCol.Text = ":";
            txtName = new TextBox();
            txtName.ID = "txtName";

            btnSave = new Button();
            btnSave.Text = "Save";
            btnSave.Click += new EventHandler(btnSave_Click);
        }

        void btnSave_Click(object sender, EventArgs e)
        {
            Save(sender, e);
        }

       
        protected override void Render(HtmlTextWriter writer)
        {
            writer.WriteFullBeginTag("table");
            writer.WriteFullBeginTag("tr");
            writer.WriteFullBeginTag("td");
            lblID.RenderControl(writer);
            writer.WriteEndTag("td");
            writer.WriteFullBeginTag("td");
            lblIDCol.RenderControl(writer);
            writer.WriteEndTag("td");
            writer.WriteFullBeginTag("td");
            txtID.RenderControl(writer);
            writer.WriteEndTag("td");
            writer.WriteEndTag("tr");

            writer.WriteFullBeginTag("tr");
            writer.WriteFullBeginTag("td");
            lblName.RenderControl(writer);
            writer.WriteEndTag("td");
            writer.WriteFullBeginTag("td");
            lblNameCol.RenderControl(writer);
            writer.WriteEndTag("td");
            writer.WriteFullBeginTag("td");
            txtName.RenderControl(writer);
            writer.WriteEndTag("td");
            writer.WriteEndTag("tr");

            writer.WriteFullBeginTag("tr");
            writer.WriteFullBeginTag("td");
            btnSave.RenderControl(writer);
            writer.WriteEndTag("td");
            writer.WriteEndTag("tr");

            writer.WriteEndTag("table");
        }
    }

Code in aspx :

<cc1:Register ID="Register1" runat="server" önsave="Register1_Save" />

protected void Register1_Save(object sender, EventArgs e)
       {

       }

In the above Register1_Save is not firing on click of save button. Can you suggest any solution for this.

Thanks,