Save (Insert) ASP.Net GridView rows in database using C# and VB.Net

Hi snickk,

Refer below code.

HTML

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" OnRowEditing="OnRowEditing">
    <Columns>
        <asp:BoundField DataField="Student" HeaderText="Student" />
        <asp:TemplateField HeaderText="Math">
            <ItemTemplate>
                <asp:TextBox ID="txtMath" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Science">
            <ItemTemplate>
                <asp:TextBox ID="txtScience" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="English">
            <ItemTemplate>
                <asp:TextBox ID="txtEnglish" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>
<br />
<asp:Button Text="Save" runat="server" OnClick="OnSave" />

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 (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[] { new DataColumn("Student") });
        dt.Rows.Add("Student A");
        dt.Rows.Add("Student B");
        dt.Rows.Add("Student C");
        GridView1.DataSource = ViewState["dt"] as DataTable;
        GridView1.DataBind();
    }
}

protected void OnSave(object sender, EventArgs e)
{
    foreach (GridViewRow row in GridView1.Rows)
    {
        string student = row.Cells[0].Text;
        string math = (row.FindControl("txtMath") as TextBox).Text;
        string science = (row.FindControl("txtScience") as TextBox).Text;
        string english = (row.FindControl("txtEnglish") as TextBox).Text;
        string query = "INSERT INTO StudentMark VALUES(@Name, @Math, @Science, @English)";
        string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        using (SqlConnection con = new SqlConnection(constr))
        {
            using (SqlCommand cmd = new SqlCommand(query))
            {
                cmd.Parameters.AddWithValue("@Name", student);
                cmd.Parameters.AddWithValue("@Math", math);
                cmd.Parameters.AddWithValue("@Science", science);
                cmd.Parameters.AddWithValue("@English", english);
                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 Me.IsPostBack Then
        Dim dt As DataTable = New DataTable()
        dt.Columns.AddRange(New DataColumn() {New DataColumn("Student")})
        dt.Rows.Add("Student A")
        dt.Rows.Add("Student B")
        dt.Rows.Add("Student C")
        GridView1.DataSource = TryCast(ViewState("dt"), DataTable)
        GridView1.DataBind()
    End If
End Sub

Protected Sub OnSave(ByVal sender As Object, ByVal e As EventArgs)
    For Each row As GridViewRow In GridView1.Rows
        Dim student As String = row.Cells(0).Text
        Dim math As String = TryCast(row.FindControl("txtMath"), TextBox).Text
        Dim science As String = TryCast(row.FindControl("txtScience"), TextBox).Text
        Dim english As String = TryCast(row.FindControl("txtEnglish"), TextBox).Text
        Dim query As String = "INSERT INTO StudentMark VALUES(@Name, @Math, @Science, @English)"
        Dim constr As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
        Using con As SqlConnection = New SqlConnection(constr)
            Using cmd As SqlCommand = New SqlCommand(query)
                cmd.Parameters.AddWithValue("@Name", student)
                cmd.Parameters.AddWithValue("@Math", math)
                cmd.Parameters.AddWithValue("@Science", science)
                cmd.Parameters.AddWithValue("@English", english)
                cmd.Connection = con
                con.Open()
                cmd.ExecuteNonQuery()
                con.Close()
            End Using
        End Using
    Next
End Sub