Insert record in database from TextBox

Hi Joey,

Please refer below sample.

Database

CREATE TABLE [dbo].[Vegitables](
	[Id] [int] IDENTITY(1,1) NOT NULL,
	[Name] [varchar](50) NULL,
	[PricePerkg] [int] NULL,
	[QtyInKg] [int] NULL,
 CONSTRAINT [PK_Vegitables] PRIMARY KEY CLUSTERED 
(
	[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO

HTML

<div>
    <asp:GridView ID="gvVegitables" runat="server" AutoGenerateColumns="false" OnRowDataBound="OnRowDataBound" ShowHeaderWhenEmpty="true">
        <Columns>
            <asp:BoundField DataField="Id" HeaderText="Id" />
            <asp:BoundField DataField="Name" HeaderText="Name" />
            <asp:BoundField DataField="PricePerKg" HeaderText="PricePerKg" />
            <asp:BoundField DataField="QtyInKg" HeaderText="QtyInKg" />
        </Columns>
        <EmptyDataTemplate>
            <div align="center">
                Record not found
            </div>
        </EmptyDataTemplate>
    </asp:GridView>
    <br />
    <br />
    <table>
        <tr>
            <td>Name:</td>
            <td>
                <asp:TextBox ID="txtName" runat="server"></asp:TextBox></td>
            <td>
                <asp:RequiredFieldValidator ID="rfvtName" runat="server" ControlToValidate="txtName" Display="Dynamic"
                    ErrorMessage="Name is required" ForeColor="Red"></asp:RequiredFieldValidator>
                <asp:RegularExpressionValidator ID="revName" runat="server" ControlToValidate="txtName" Display="Dynamic" ForeColor="Red"
                    ErrorMessage="Accepted only alphates" ValidationExpression="[a-zA-Z ]*$"></asp:RegularExpressionValidator>
            </td>
        </tr>
        <tr>
            <td>PricePerKg:</td>
            <td>
                <asp:TextBox ID="txtPricePerKg" runat="server"></asp:TextBox></td>
            <td>
                <asp:RequiredFieldValidator ID="rfvPricePerKg" runat="server" ControlToValidate="txtPricePerKg" Display="Dynamic"
                    ErrorMessage="PricePerKg is required" ForeColor="Red"></asp:RequiredFieldValidator>
                <asp:RegularExpressionValidator ID="revPricePerKg" runat="server" ControlToValidate="txtPricePerKg" Display="Dynamic" ForeColor="Red"
                    ErrorMessage="Accepted only 0-9 " ValidationExpression="[0-9]*$"></asp:RegularExpressionValidator>
            </td>
        </tr>
        <tr>
            <td>QtyInKg:</td>
            <td>
                <asp:TextBox ID="txtQtyInKg" runat="server"></asp:TextBox></td>
            <td>
                <asp:RequiredFieldValidator ID="rfvQtyInKg" runat="server" ControlToValidate="txtQtyInKg" Display="Dynamic"
                    ErrorMessage="QtyInKg is required" ForeColor="Red"></asp:RequiredFieldValidator>
                <asp:RegularExpressionValidator ID="revQtyInKg" runat="server" ControlToValidate="txtQtyInKg" Display="Dynamic" ForeColor="Red"
                    ErrorMessage="Accepted only 0-9" ValidationExpression="[0-9]*$"></asp:RegularExpressionValidator>
            </td>
        </tr>
        <tr>
            <td></td>
            <td colspan="2">
                <asp:Button runat="server" Text="Submit" OnClick="OnSubmit" /></td>
        </tr>
    </table>
</div>

Namespace

using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web.UI.WebControls;

Code

#region Events

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

protected void OnSubmit(Object sender, EventArgs e)
{
    string name = txtName.Text.Trim();
    int pricePrKg = int.Parse(txtPricePerKg.Text);
    int qtyInKg = int.Parse(txtQtyInKg.Text);
    if (!string.IsNullOrEmpty(name) && pricePrKg > 0 && qtyInKg > 0)
    {
        string qrery = @"INSERT INTO Vegitables VALUES(@Name,@PricePrKg,@QtyInKg)";

        string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        using (SqlConnection sqlConnection = new SqlConnection(constr))
        {
            using (SqlCommand sqlCommand = new SqlCommand(qrery, sqlConnection))
            {
                sqlCommand.Parameters.AddWithValue("@Name", name);
                sqlCommand.Parameters.AddWithValue("@PricePrKg", pricePrKg);
                sqlCommand.Parameters.AddWithValue("@QtyInKg", qtyInKg);
                sqlConnection.Open();
                sqlCommand.ExecuteNonQuery();
                sqlConnection.Close();
            }
        }
    }

    this.BindGrid();
}

protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        int quantity = int.Parse(e.Row.Cells[3].Text);
        if (quantity <= 5)
        {
            e.Row.BackColor = Color.Red;
        }
    }
}
#endregion

#region Private Methods
/// Populates Gridview.
/// </summary>
private void BindGrid()
{
    string constr = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    using (SqlConnection sqlConnection = new SqlConnection(constr))
    {
        using (SqlCommand sqlCommand = new SqlCommand("SELECT Id, Name, PricePerKg, QtyInKg FROM Vegitables", sqlConnection))
        {
            using (SqlDataAdapter sqlDataAdapter = new SqlDataAdapter(sqlCommand))
            {
                using (DataTable dtVegitables = new DataTable())
                {
                    sqlDataAdapter.Fill(dtVegitables);
                    gvVegitables.DataSource = dtVegitables;
                    gvVegitables.DataBind();
                }
            }
        }
    }
}

#endregion

Screenshot