Delete SP Not Firing?

 I cannot get this event to fire. I am using TextBox9 to see if statements are processed and it never fills so it appears the Button4_Click never happens.  Any ideas?

Thank you, 

<asp:Button ID="Button4" runat="server" OnClick="Button4_Click" Text="Delete Submission" /> protected void Button4_Click(object sender, EventArgs e)
    {
        string CompanyDeleteID = TextBox10.Text;
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["localhomeexpoConnectionString2"].ConnectionString);
        SqlCommand cmd = new SqlCommand("DeleteSubmission", con);
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.AddWithValue("@C_ID", CompanyDeleteID);
       TextBox9.Text = "SP completed";


    }

 

PROCEDURE dbo.DeleteSubmission
 @C_ID int
AS
BEGIN
 DELETE
 FROM tblCompanyInfo_Submit
 WHERE C_ID = @C_ID

 DELETE
 FROM tblStoreStudioSubmit
 WHERE C_ID = @C_ID

 DELETE
 FROM tblContractorSubmit
 WHERE C_ID = @C_ID
 
RETURN
ENDWHERE CD_ID = @C_ID
RETURN