Insert multiple rows of user in database using ASP.Net GridView Footer in C# and VB.Net

HiSadia.net,

I have created a small example. Now please take its reference and correct your code.

HTML

<div>
    <asp:TextBox runat="server" ID="txtName" />
    <br />
    <br />
    <asp:GridView ID="GridView1" runat="server" ShowFooter="true" AutoGenerateColumns="false">
        <Columns>
            <asp:TemplateField HeaderText="Company Name">
                <ItemTemplate>
                    <asp:Label ID="lblCompanyName" Text='<%# Eval("CompanyName") %>' runat="server" />
                </ItemTemplate>
                <FooterTemplate>
                    <asp:TextBox ID="txtCompanyName" runat="server"></asp:TextBox>
                </FooterTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Designation">
                <ItemTemplate>
                    <asp:Label ID="lblDesignation" Text='<%# Eval("Designation") %>' runat="server" />
                </ItemTemplate>
                <FooterTemplate>
                    <asp:TextBox ID="txtDesignation" runat="server"></asp:TextBox>
                </FooterTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Experience">
                <ItemTemplate>
                    <asp:Label ID="lblExperience" Text='<%# Eval("Experience") %>' runat="server" />
                </ItemTemplate>
                <FooterTemplate>
                    <asp:TextBox ID="txtExperience" runat="server"></asp:TextBox>
                    <asp:Button ID="btnAdd" runat="server" Text="Add" OnClick="Add" />
                </FooterTemplate>
            </asp:TemplateField>
        </Columns>
        <EmptyDataTemplate>
            <tr>
                <th>
                    Company Name
                </th>
                <th>
                    Designation
                </th>
                <th>
                    Experience
                </th>
            </tr>
            <tr>
                <td>
                    <asp:TextBox ID="txtCompanyName" runat="server" />
                </td>
                <td>
                    <asp:TextBox ID="txtDesignation" runat="server" />
                </td>
                <td>
                    <asp:TextBox ID="txtExperience" runat="server" />
                    <asp:Button ID="btnAdd" runat="server" Text="Add" OnClick="Add" />
                </td>
            </tr>
        </EmptyDataTemplate>
    </asp:GridView>
    <br />
    <asp:Button ID="btnSave" runat="server" Text="Save" OnClick="Save" />
</div>

Namespaces

C#

using System.Configuration;
using System.Data;
using System.Data.SqlClient;

VB.Net

Imports System.Configuration
Imports System.Data
Imports System.Data.SqlClient

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        BindData();
    }
}

private void BindData()
{
    DataTable dt;
    if (ViewState["Experience"] == null)
    {
        dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { 
                        new DataColumn("CompanyName"),
                        new DataColumn("Designation"),
                        new DataColumn("Experience") });
        ViewState["Experience"] = dt;
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
    else
    {
        dt = (DataTable)ViewState["Experience"];
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

protected void Add(object sender, EventArgs e)
{
    Control control = null;
    if (GridView1.FooterRow != null)
    {
        control = GridView1.FooterRow;
    }
    else
    {
        control = GridView1.Controls[0].Controls[0];
    }

    string companyName = (control.FindControl("txtCompanyName") as TextBox).Text;
    string designation = (control.FindControl("txtDesignation") as TextBox).Text;
    string experience = (control.FindControl("txtExperience") as TextBox).Text;
    DataTable dtData = (DataTable)ViewState["Experience"];
    dtData.Rows.Add(companyName, designation, experience);
    ViewState["Experience"] = dtData;
    BindData();
}

protected void Save(object sender, EventArgs e)
{
    foreach (GridViewRow row in GridView1.Rows)
    {
        string companyName = (row.FindControl("lblCompanyName") as Label).Text;
        string designation = (row.FindControl("lblDesignation") as Label).Text;
        string experience = (row.FindControl("lblExperience") as Label).Text;
        Insert(txtName.Text.Trim(), companyName, designation, experience);
    }

    Response.Redirect(Request.Url.AbsoluteUri);
}

private void Insert(string name, string companyName, string designation, string experience)
{
    // Code to insert record in database.
    using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["constr"].ConnectionString))
    {
        SqlCommand cmd = new SqlCommand("INSERT INTO EmpCompany VALUES (@Name,@CompanyName,@Designation,@Experience)");
        cmd.Parameters.AddWithValue("@Name", name);
        cmd.Parameters.AddWithValue("@CompanyName", companyName);
        cmd.Parameters.AddWithValue("@Designation", experience);
        cmd.Parameters.AddWithValue("@Experience", designation);
        cmd.Connection = con;
        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
    }
}

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
    If Not IsPostBack Then
        BindData()
    End If
End Sub

Private Sub BindData()
    Dim dt As DataTable
    If ViewState("Experience") Is Nothing Then
        dt = New DataTable()
        dt.Columns.AddRange(New DataColumn(2) {New DataColumn("CompanyName"), New DataColumn("Designation"), New DataColumn("Experience")})
        ViewState("Experience") = dt
        GridView1.DataSource = dt
        GridView1.DataBind()
    Else
        dt = CType(ViewState("Experience"), DataTable)
        GridView1.DataSource = dt
        GridView1.DataBind()
    End If
End Sub

Protected Sub Add(ByVal sender As Object, ByVal e As EventArgs)
    Dim control As Control = Nothing
    If GridView1.FooterRow IsNot Nothing Then
        control = GridView1.FooterRow
    Else
        control = GridView1.Controls(0).Controls(0)
    End If
    Dim companyName As String = (TryCast(control.FindControl("txtCompanyName"), TextBox)).Text
    Dim designation As String = (TryCast(control.FindControl("txtDesignation"), TextBox)).Text
    Dim experience As String = (TryCast(control.FindControl("txtExperience"), TextBox)).Text
    Dim dtData As DataTable = CType(ViewState("Experience"), DataTable)
    dtData.Rows.Add(companyName, designation, experience)
    ViewState("Experience") = dtData
    BindData()
End Sub

Protected Sub Save(ByVal sender As Object, ByVal e As EventArgs)
    For Each row As GridViewRow In GridView1.Rows
        Dim companyName As String = (TryCast(row.FindControl("lblCompanyName"), Label)).Text
        Dim designation As String = (TryCast(row.FindControl("lblDesignation"), Label)).Text
        Dim experience As String = (TryCast(row.FindControl("lblExperience"), Label)).Text
        Insert(txtName.Text.Trim(), companyName, designation, experience)
    Next

    Response.Redirect(Request.Url.AbsoluteUri)
End Sub

Private Sub Insert(ByVal name As String, ByVal companyName As String, ByVal designation As String, ByVal experience As String)
    ' Code to insert record in database.
    Using con As SqlConnection = New SqlConnection(ConfigurationManager.ConnectionStrings("constr").ConnectionString)
        Dim cmd As SqlCommand = New SqlCommand("INSERT INTO EmpCompany VALUES (@Name,@CompanyName,@Designation,@Experience)")
        cmd.Parameters.AddWithValue("@Name", name)
        cmd.Parameters.AddWithValue("@CompanyName", companyName)
        cmd.Parameters.AddWithValue("@Designation", experience)
        cmd.Parameters.AddWithValue("@Experience", designation)
        cmd.Connection = con
        con.Open()
        cmd.ExecuteNonQuery()
        con.Close()
    End Using
End Sub

Screenshot

Note: If you want to insert data in different table change the insert code as per your need.