How to add footer and adding data in grid view control in Asp.net

How to add footer and adding data in grid view control in Asp.net

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Step 1 : Create your website first and then create one .aspx page

Step 2 : Open that page and Drag and Drop GridView control from Toolbox Diaglog box

<asp:GridView ID="GridView1" runat="server">
</asp:GridView>

Step 3 : After adding grid view open server side code of that page. opne .cs file or .vb file

Step 4 : Create one class Student and paste below code in file

public class Student
{
    public int RollNo { get; set; }
    public string StudentName { get; set; }
    public string Address { get; set; }
    public string MobileNo { get; set; }
    public int Marks { get; set; }
} 

Step 5 : Create student record first and then paste below code


List<Student> data = new List<Student>();
        data.Add(new Student { RollNo = 1, StudentName = "Student1", MobileNo = "1234567890", Address = "India", Marks = 50 });
        data.Add(new Student { RollNo = 2, StudentName = "Student2", MobileNo = "1234567890", Address = "Uk", Marks = 70 });
//doing sub total of marks and adding to ViewState  
        int totalMarks = 0;
        foreach (Student item in data)
        {
            totalMarks += item.Marks;
        }

        ViewState["TotalAmount"] = totalMarks.ToString();
        GridView1.DataSource = data;
        GridView1.DataBind();

Step 6 : After adding record and making sub total of marks then add below code of grid view control and remember set ShowFooter property to true.


<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" 
             ShowFooter="True" onrowdatabound="GridView1_RowDataBound">
        <Columns>
            <asp:BoundField DataField="RollNo" HeaderText="Roll No" />
            <asp:BoundField DataField="StudentName" HeaderText="Studnet Name" SortExpression="StudentName" />
            <asp:BoundField DataField="MobileNo" HeaderText="Mobile No" />
            <asp:BoundField DataField="Address" HeaderText="Address" />
            <asp:TemplateField HeaderText="Address">
                <FooterTemplate>
                   <b> Total Marks :</b>
                </FooterTemplate>
                <ItemTemplate>
                   <asp:Label ID="Label1" runat="server" Text='<%# Eval("Address") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Marks">
                <FooterTemplate>
                    <b><asp:Label ID="lblMarksTotal" runat="server" ></asp:Label> <b>
                </FooterTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label2" runat="server" Text='<%# Eval("Marks") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>


Step 7 : Also add onRowDatabound event of grid view and paste below code in code behind.

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.Footer)
        {
            ((Label)e.Row.FindControl("lblMarksTotal")).Text = ViewState["TotalAmount"].ToString();
        }
    }

 Step 8 : Check your project is they showing perfect sub total or not.