gridview

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="Eye.ascx.cs" Inherits="Controls_Eye" %>
<table cellpadding="1" cellspacing="0">
    <tr>
        <td>
            <asp:ValidationSummary ID="vsCheck" runat="server" Enabled="true" Width="250px" HeaderText="Please correct the following errors:"
                EnableClientScript="true" ValidationGroup="vgEye" />
            <asp:ValidationSummary ID="ValidationSummary1" runat="server" Enabled="true" Width="250px"
                HeaderText="Please correct the following errors:" EnableClientScript="true" ValidationGroup="vgAdd" />
            <asp:SqlDataSource SelectCommand="SELECT * FROM [Eye] where TrackID=@TrackID" DeleteCommand="DELETE FROM [Eye] WHERE [EyeID] = @EyeID"
                UpdateCommand="UPDATE [Eye] SET [TrackID] = @TrackID, [EyeNumber] = @EyeNumber, [Position] = @Position, [Function] = @Function, [CumulativeDistance] = @CumulativeDistance, [IntervalDistance] = @IntervalDistance WHERE [EyeID] = @EyeID"
                InsertCommand="INSERT INTO [Eye](TrackID,EyeNumber,Position,[Function],CumulativeDistance,IntervalDistance) VALUES (@TrackID,@EyeNumber,@Position,@Function,@CumulativeDistance,@IntervalDistance)"
                ID="sdsEye" ConnectionString="<%$ ConnectionStrings:ConnectionInfo %>" runat="server"
                OnSelecting="sdsEye_Selecting">
                <SelectParameters>
                    <asp:Parameter Name="TrackID" Type="Int32" />
                </SelectParameters>
                <DeleteParameters>
                    <asp:Parameter Name="EyeID" Type="Int32" />
                </DeleteParameters>
                <UpdateParameters>
                    <asp:Parameter Name="TrackID" Type="Int32" />
                    <asp:Parameter Name="EyeNumber" Type="Int32" />
                    <asp:Parameter Name="Position" Type="String" />
                    <asp:Parameter Name="Function" Type="String" />
                    <asp:Parameter Name="CumulativeDistance" Type="Double" />
                    <asp:Parameter Name="IntervalDistance" Type="Double" />
                    <asp:Parameter Name="EyeID" Type="Int32" />
                </UpdateParameters>
                <InsertParameters>
                    <asp:Parameter Name="TrackID" Type="Int32" />
                    <asp:Parameter Name="EyeNumber" Type="Int32" />
                    <asp:Parameter Name="Position" Type="String" />
                    <asp:Parameter Name="Function" Type="String" />
                    <asp:Parameter Name="CumulativeDistance" Type="Double" />
                    <asp:Parameter Name="IntervalDistance" Type="Double" />
                </InsertParameters>
            </asp:SqlDataSource>
            <asp:GridView ID="gvEye" AutoGenerateColumns="False" DataSourceID="sdsEye" DataKeyNames="EyeID"
                AllowPaging="True" AllowSorting="True" runat="server" OnRowUpdating="gvEye_RowUpdating">
                <Columns>
                    <asp:CommandField ShowDeleteButton="True" ShowEditButton="True" CausesValidation="true"
                        ValidationGroup="vgEye" />
                    <asp:TemplateField HeaderText="EyeNumber" SortExpression="EyeNumber" FooterStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center">
                        <ItemTemplate>
                            <asp:Label CssClass="EyeControlLabel" runat="Server" ID="lblEyeNumber" Text='<%#Bind("EyeNumber")%>'></asp:Label>
                        </ItemTemplate>
                        <EditItemTemplate>
                            <asp:TextBox runat="Server" CssClass="EyeControlShortTextBox" ID="txtEyeNumber" Text='<%#Bind("EyeNumber")%>'></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvEyeNumber" runat="server" ControlToValidate="txtEyeNumber"
                                ErrorMessage="Eye number Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                            <asp:RegularExpressionValidator runat="server" ID="rxvEyeNumber" ErrorMessage="Eye number needs to be number"
                                Text="*" ValidationGroup="vgEye" ValidationExpression="^[0-9]+$" ControlToValidate="txtEyeNumber">
                            </asp:RegularExpressionValidator>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:TextBox ID="txtFooterEyeNumber" CssClass="EyeControlShortTextBox" runat="server"></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvEyeNumber" runat="server" ControlToValidate="txtFooterEyeNumber"
                                ErrorMessage="Eye number Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                            <asp:RegularExpressionValidator runat="server" ID="rxvEyeNumber" ErrorMessage="Eye number needs to be number"
                                Text="*" ValidationGroup="vgEye" ValidationExpression="^[0-9]+$" ControlToValidate="txtFooterEyeNumber">
                            </asp:RegularExpressionValidator>
                        </FooterTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="Position" SortExpression="Position" FooterStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center">
                        <ItemTemplate>
                            <asp:Label CssClass="EyeControlLabel" runat="Server" ID="lblPosition" Text='<%#Bind("Position")%>'></asp:Label>
                        </ItemTemplate>
                        <EditItemTemplate>
                            <asp:TextBox runat="server" CssClass="EyeControlLongTextBox" ID="txtPosition" Text='<%#Bind("Position")%>'></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvPosition" runat="server" ControlToValidate="txtPosition"
                                ErrorMessage="Position Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:TextBox CssClass="EyeControlLongTextBox" ID="txtFooterPosition" runat="server"></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvPosition" runat="server" ControlToValidate="txtFooterPosition"
                                ErrorMessage="Position Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                        </FooterTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="Function" SortExpression="Function" FooterStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center">
                        <ItemTemplate>
                            <asp:Label CssClass="EyeControlLabel" runat="Server" ID="lblFunction" Text='<%#Bind("Function")%>'></asp:Label>
                        </ItemTemplate>
                        <EditItemTemplate>
                            <asp:TextBox runat="Server" CssClass="EyeControlLongTextBox" ID="txtFunction" Text='<%#Bind("Function")%>'></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvFunction" runat="server" ControlToValidate="txtFunction"
                                ErrorMessage="Function Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:TextBox CssClass="EyeControlLongTextBox" ID="txtFooterFunction" runat="server"></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvFunction" runat="server" ControlToValidate="txtFooterFunction"
                                ErrorMessage="Function Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                        </FooterTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="CumulativeDistance" SortExpression="CumulativeDistance" FooterStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center">
                        <ItemTemplate>
                            <asp:Label CssClass="EyeControlLabel" runat="Server" ID="lblCumulativeDistance" Text='<%#Bind("CumulativeDistance")%>'></asp:Label>
                        </ItemTemplate>
                        <EditItemTemplate>
                            <asp:TextBox runat="Server" CssClass="EyeControlShortTextBox" ID="txtCumulativeDistance" Text='<%#Bind("CumulativeDistance")%>'></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvCumulativeDistance" runat="server" ControlToValidate="txtCumulativeDistance"
                                ErrorMessage="Cumulative Distance Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                            <asp:RegularExpressionValidator runat="server" ID="rxvCumulativeDistance" ErrorMessage="Cumulative Distance needs to be number"
                                Text="*" ValidationGroup="vgEye" ValidationExpression="^((\d)+)(\.\d+)?$" ControlToValidate="txtCumulativeDistance">
                            </asp:RegularExpressionValidator>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:TextBox CssClass="EyeControlShortTextBox" ID="txtFooterCumulativeDistance" runat="server"></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvCumulativeDistance" runat="server" ControlToValidate="txtFooterCumulativeDistance"
                                ErrorMessage="Cumulative Distance Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                            <asp:RegularExpressionValidator runat="server" ID="rxvCumulativeDistance" ErrorMessage="Cumulative Distance needs to be number"
                                Text="*" ValidationGroup="vgEye" ValidationExpression="^((\d)+)(\.\d+)?$" ControlToValidate="txtFooterCumulativeDistance">
                            </asp:RegularExpressionValidator>
                        </FooterTemplate>
                    </asp:TemplateField>
                    <asp:TemplateField HeaderText="IntervalDistance" SortExpression="IntervalDistance" FooterStyle-HorizontalAlign="Center" ItemStyle-HorizontalAlign="Center">
                        <ItemTemplate>
                            <asp:Label CssClass="EyeControlLabel" runat="Server" ID="lblIntervalDistance" Text='<%#Bind("IntervalDistance")%>'></asp:Label>
                        </ItemTemplate>
                        <EditItemTemplate>
                            <asp:TextBox runat="Server" CssClass="EyeControlShortTextBox" ID="txtIntervalDistance" Text='<%#Bind("IntervalDistance")%>'></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvIntervalDistance" runat="server" ControlToValidate="txtIntervalDistance"
                                ErrorMessage="Interval Distance Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                            <asp:RegularExpressionValidator runat="server" ID="rxvIntervalDistance" ErrorMessage="Interval Distance needs to be number"
                                Text="*" ValidationGroup="vgEye" ValidationExpression="^((\d)+)(\.\d+)?$" ControlToValidate="txtIntervalDistance">
                            </asp:RegularExpressionValidator>
                        </EditItemTemplate>
                        <FooterTemplate>
                            <asp:TextBox CssClass="EyeControlShortTextBox" ID="txtFooterIntervalDistance" runat="server"></asp:TextBox>
                            <asp:RequiredFieldValidator ID="rfvIntervalDistance" runat="server" ControlToValidate="txtFooterIntervalDistance"
                                ErrorMessage="Interval Distance Required" Text="*" ValidationGroup="vgEye">
                            </asp:RequiredFieldValidator>
                            <asp:RegularExpressionValidator runat="server" ID="rxvIntervalDistance" ErrorMessage="Interval Distance needs to be number"
                                Text="*" ValidationGroup="vgEye" ValidationExpression="^((\d)+)(\.\d+)?$" ControlToValidate="txtFooterIntervalDistance">
                            </asp:RegularExpressionValidator>
                        </FooterTemplate>
                    </asp:TemplateField>
                </Columns>
            </asp:GridView>
            <div runat="Server" id="inputDiv">
                <asp:Label ID="lblAddEyeNumber" runat="server" Text="Eye Number:" CssClass="EyeUserControlLabel"></asp:Label>
                <asp:TextBox ID="txtAddEyeNumber" runat="server" CssClass="EyeUserControlTextBox"></asp:TextBox>
                <asp:RequiredFieldValidator ID="rfvAddEyeNumber" runat="server" ControlToValidate="txtAddEyeNumber"
                    ErrorMessage="Eye number Required" Text="*" ValidationGroup="vgAdd">
                </asp:RequiredFieldValidator>
                <asp:RegularExpressionValidator runat="server" ID="rxvAddEyeNumber" ErrorMessage="Eye number needs to be number"
                    Text="*" ValidationGroup="vgAdd" ValidationExpression="^[0-9]+$" ControlToValidate="txtAddEyeNumber">
                </asp:RegularExpressionValidator>
                <br />
                <asp:Label ID="lblAddPosition" runat="server" Text="Position:" CssClass="EyeUserControlLabel"></asp:Label>
                <asp:TextBox ID="txtAddPosition" runat="server" CssClass="EyeUserControlTextBox"></asp:TextBox>
                <asp:RequiredFieldValidator ID="rfvAddPosition" runat="server" ControlToValidate="txtAddPosition"
                    ErrorMessage="Position Required" Text="*" ValidationGroup="vgAdd">
                </asp:RequiredFieldValidator>
                <br />
                <asp:Label ID="lblAddFunction" runat="server" Text="Function:" CssClass="EyeUserControlLabel"></asp:Label>
                <asp:TextBox ID="txtAddFunction" runat="server" CssClass="EyeUserControlTextBox"></asp:TextBox>
                <asp:RequiredFieldValidator ID="rfvAddFunction" runat="server" ControlToValidate="txtAddFunction"
                    ErrorMessage="Function Required" Text="*" ValidationGroup="vgAdd">
                </asp:RequiredFieldValidator>
                <br />
                <asp:Label ID="lblAddCumulativeDistance" runat="server" Text="Cumulative Distance:"
                    CssClass="EyeUserControlLabel"></asp:Label>
                <asp:TextBox ID="txtAddCumulativeDistance" runat="server" CssClass="EyeUserControlTextBox"></asp:TextBox>
                <asp:RequiredFieldValidator ID="rfvAddCumulativeDistance" runat="server" ControlToValidate="txtAddCumulativeDistance"
                    ErrorMessage="Cumulative Distance Required" Text="*" ValidationGroup="vgAdd">
                </asp:RequiredFieldValidator>
                <asp:RegularExpressionValidator runat="server" ID="rxvAddCumulativeDistance" ErrorMessage="Cumulative Distance needs to be number"
                    Text="*" ValidationGroup="vgAdd" ValidationExpression="^((\d)+)(\.\d+)?$" ControlToValidate="txtAddCumulativeDistance">
                </asp:RegularExpressionValidator>
                <br />
                <asp:Label ID="lblAddIntervalDistance" runat="server" Text="Interval Distance:" CssClass="EyeUserControlLabel"></asp:Label>
                <asp:TextBox ID="txtAddIntervalDistance" runat="server" CssClass="EyeUserControlTextBox"></asp:TextBox>
                <asp:RequiredFieldValidator ID="rfvAddIntervalDistance" runat="server" ControlToValidate="txtAddIntervalDistance"
                    ErrorMessage="Interval Distance Required" Text="*" ValidationGroup="vgAdd">
                </asp:RequiredFieldValidator>
                <asp:RegularExpressionValidator runat="server" ID="rxvAddIntervalDistance" ErrorMessage="Interval Distance needs to be number"
                    Text="*" ValidationGroup="vgAdd" ValidationExpression="^((\d)+)(\.\d+)?$" ControlToValidate="txtAddIntervalDistance">
                </asp:RegularExpressionValidator>
                <br />
            </div>
            <br />
            <asp:Button ID="btnAdd" runat="server" Text="Add new" OnClick="btnAdd_Click" />
            <asp:Button runat="server" ID="btnSave" Text="Save" CausesValidation="true" ValidationGroup="vgAdd"
                OnClick="btnSave_Click" Visible="false" />
            <asp:Button runat="Server" ID="btnFooterSave" Text="Save" CausesValidation="true"
                ValidationGroup="vgEye" Visible="false" OnClick="btnFooterSave_Click" />
            <asp:Button runat="Server" ID="btnCancel" Text="Cancel" OnClick="btnCancel_Click"
                Visible="false" />
        </td>
    </tr>
</table>

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Entities;
using DomainObjects;

public partial class Controls_Eye : System.Web.UI.UserControl
{
    public int TrackID
    {
        get
        {
            return Convert.ToInt32(this.ViewState["TrackID"]);
        }
        set
        {
            this.ViewState["TrackID"] = value;
            this.gvEye.DataBind();
        }
    }
    "Page_Load"#region "Page_Load"
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            ShowAddingLayout(false);
        }
    }
    #endregion

    "btnAdd_Click"#region "btnAdd_Click"
    protected void btnAdd_Click(object sender, EventArgs e)
    {
        ShowAddingLayout(true);
    }
    #endregion

    "ShowAddingLayout"#region "ShowAddingLayout"
    private void ShowAddingLayout(bool IsAdding)
    {
        this.btnAdd.Visible = !IsAdding;
        this.btnCancel.Visible = IsAdding;
        if (this.gvEye.Rows.Count == 0)
        {
            if (IsAdding)
            {
                this.btnSave.Visible = true;
                this.btnFooterSave.Visible = false;
                this.inputDiv.Visible = true;
            }
            else
            {
                this.btnSave.Visible = false;
                this.btnFooterSave.Visible = false;
                this.inputDiv.Visible = false;
            }
        }
        else
        {
            this.gvEye.ShowFooter = IsAdding;
            this.inputDiv.Visible = false;
            if (IsAdding)
            {
                this.btnSave.Visible = false;
                this.btnFooterSave.Visible = true;
            }
            else
            {
                this.btnSave.Visible = false;
                this.btnFooterSave.Visible = false;
            }
        }
    }
    #endregion

    "btnSave_Click"#region "btnSave_Click"
    protected void btnSave_Click(object sender, EventArgs e)
    {
        Eye eye = new Eye();
        eye.TrackID = Convert.ToInt32(this.ViewState["TrackID"]);
        eye.EyeNumber = Convert.ToInt32(this.txtAddEyeNumber.Text);
        eye.Position = this.txtAddPosition.Text;
        eye.Function = this.txtAddFunction.Text;
        eye.CumulativeDistance = Convert.ToDouble(this.txtAddCumulativeDistance.Text);
        eye.IntervalDistance = Convert.ToDouble(this.txtAddIntervalDistance.Text);
        (new EyeDO()).createEye(eye);
        this.gvEye.DataBind();
        ShowAddingLayout(false);
        this.txtAddEyeNumber.Text = "";
        this.txtAddPosition.Text = "";
        this.txtAddFunction.Text = "";
        this.txtAddCumulativeDistance.Text = "";
        this.txtAddIntervalDistance.Text = "";
    }
    #endregion

    "btnCancel_Click"#region "btnCancel_Click"
    protected void btnCancel_Click(object sender, EventArgs e)
    {
        ShowAddingLayout(false);
    }
    #endregion

    "btnFooterSave_Click"#region "btnFooterSave_Click"
    protected void btnFooterSave_Click(object sender, EventArgs e)
    {
        Eye eye = new Eye();
        eye.TrackID = Convert.ToInt32(this.ViewState["TrackID"]);
        TextBox txtFooterEyeNumber = (TextBox)this.gvEye.FooterRow.FindControl("txtFooterEyeNumber");
        eye.EyeNumber = Convert.ToInt32(txtFooterEyeNumber.Text);
        TextBox txtFooterPosition = (TextBox)this.gvEye.FooterRow.FindControl("txtFooterPosition");
        eye.Position = txtFooterPosition.Text;
        TextBox txtFooterFunction = (TextBox)this.gvEye.FooterRow.FindControl("txtFooterFunction");
        eye.Function = txtFooterFunction.Text;
        TextBox txtFooterCumulativeDistance = (TextBox)this.gvEye.FooterRow.FindControl("txtFooterCumulativeDistance");
        eye.CumulativeDistance = Convert.ToDouble(txtFooterCumulativeDistance.Text);
        TextBox txtFooterIntervalDistance = (TextBox)this.gvEye.FooterRow.FindControl("txtFooterIntervalDistance");
        eye.IntervalDistance = Convert.ToDouble(txtFooterIntervalDistance.Text);
        this.sdsEye.InsertParameters["TrackID"].DefaultValue = eye.TrackID.ToString();
        this.sdsEye.InsertParameters["EyeNumber"].DefaultValue = eye.EyeNumber.ToString();
        this.sdsEye.InsertParameters["Position"].DefaultValue = eye.Position;
        this.sdsEye.InsertParameters["Function"].DefaultValue = eye.Function;
        this.sdsEye.InsertParameters["CumulativeDistance"].DefaultValue = eye.CumulativeDistance.ToString();
        this.sdsEye.InsertParameters["IntervalDistance"].DefaultValue = eye.IntervalDistance.ToString();
        this.sdsEye.Insert();
        this.gvEye.DataBind();
        ShowAddingLayout(false);
    }
    #endregion

    "sdsEye_Selecting"#region "sdsEye_Selecting"
    protected void sdsEye_Selecting(object sender, SqlDataSourceSelectingEventArgs e)
    {
        try
        {
            e.Command.Parameters["@TrackID"].Value = Convert.ToInt32(this.ViewState["TrackID"]);
        }
        catch
        {
            e.Command.Parameters["@TrackID"].Value = -1;
        }
    }
    #endregion

    "gvEye_RowUpdating"#region "gvEye_RowUpdating"
    protected void gvEye_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        e.NewValues["TrackID"] = this.ViewState["TrackID"];
    }
    #endregion
}