File Delete From Server Folder Using Database Asp.Net C#

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File Delete From Server Folder

File Delete from Server Folder Using in Sql Database in Asp.Net C#.


                                 DEMO


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                         HTML CODING


<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div align="center">  
        
      <table><tr><td>
        <asp:Label ID="Label1" runat="server" Text="File Id"></asp:Label>
        </td><td>
            <asp:TextBox ID="txtFileId" class="txtFileId" runat="server"></asp:TextBox>
        </td>
        <td>
            </td>
        </tr>
        <tr><td>
            <asp:Label ID="Label3" runat="server" Text="File"></asp:Label>
            </td><td>
                <asp:FileUpload ID="FileUpload1" runat="server" />
            </td></tr>
        <tr><td colspan="2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
            <asp:Button ID="Button1" runat="server" Text="Register" OnClick="Button1_Click" />
asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="Reset" />
asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
            <AlternatingRowStyle ForeColor="#610B0B" />
            <HeaderStyle ForeColor="#FF0040" />
            <RowStyle ForeColor="#848484" />
            <Columns>
                <asp:TemplateField HeaderText="File Id">
                    <ItemTemplate>
                        <asp:Label ID="Label5" runat="server" Text='<%# Eval("file_id") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="File Name">
                    <ItemTemplate>
                        <asp:Label ID="Label4" runat="server" Text='<%# Eval("filename") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>                
                <asp:TemplateField HeaderText="Delete">
                    <ItemTemplate>
                        <asp:LinkButton ID="LinkButton2" runat="server" OnClick="LinkButton2_Click">Delete</asp:LinkButton>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
            </td></tr>  

    </table>
    </div>
    </form>
</body>
</html>


                                C# CODING

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.IO;

public partial class _Default : System.Web.UI.Page
{
    SqlConnection con;

    public void dbconn()
    {
        con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["dbcon"].ToString());
        con.Open();

    }
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
           bind();
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            string filename = Path.GetFileName(FileUpload1.PostedFile.FileName);
            FileUpload1.SaveAs(Server.MapPath("files/" + filename));
            dbconn();
            SqlCommand cmd = new SqlCommand
 ("insert into uploads(file_id,filename,filepath)values('" + txtFileId.Text + "','" + filename + "','" + "files/" + filename + "')", con);
            cmd.ExecuteNonQuery();
            Response.Write("<script>alert('File Uploaded')</script>");
            bind();

        }
        catch (Exception ex)
        {

            Response.Write(ex.Message);

        }
    }
    protected void bind()
{
    try
    {
     
        dbconn();
        SqlCommand cmd = new SqlCommand("select * from uploads", con);
        SqlDataAdapter adp = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        adp.Fill(ds);
        SqlDataReader rd = cmd.ExecuteReader();
        if (rd.Read())
        {
            GridView1.DataSource = ds;
            GridView1.DataBind();
        }
        else
        {
            ds.Tables[0].Rows.Add(ds.Tables[0].NewRow());
            GridView1.DataSource = ds;
            GridView1.DataBind();
            int columncount = GridView1.Rows[0].Cells.Count;
            GridView1.Rows[0].Cells.Clear();
            GridView1.Rows[0].Cells.Add(new TableCell());
            GridView1.Rows[0].Cells[0].ColumnSpan = columncount;
            GridView1.Rows[0].Cells[0].Text = "No Record(s) Found";

        }
    }
    catch (Exception ex)
    {

        Response.Write(ex.Message);

    }
}       
   
    protected void LinkButton2_Click(object sender, EventArgs e)
    {
        try
        {
            LinkButton LbtBtn = sender as LinkButton;
            GridViewRow gvrow = LbtBtn.NamingContainer as GridViewRow;
            Label lblFilename = (Label)gvrow.FindControl("Label4") as Label;
            Label lid = (Label)gvrow.FindControl("Label5") as Label;
            string filePath = Server.MapPath("files//" + lblFilename.Text);
            FileInfo file = new FileInfo(filePath);
            if (file.Exists)
            {
                dbconn();
                SqlCommand cmd = new SqlCommand("delete from uploads where file_id='" + lid.Text + "'", con);
                cmd.ExecuteNonQuery();
                file.Delete();
                Response.Write("<script>alert('File Deleted')</script>");
                bind();
            }
            else
            {
                Response.Write("<script>alert('No File Found')</script>");

            }
        }
        catch (Exception ex)
        {

            Response.Write(ex.Message);

        }
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        txtFileId.Text="";
    }
}






First - Add New WebForm - Add - Label,Textboxes,FileUpload,Gridview From ToolBox





Next - Add GridView -  Bind  Datafield



Next - Gridview Right Click - Edit Column - Add TemplateField - Remove Auto Generate Fields







Next - Change Header Text - Ok 






Next - Gridview - Right Click - Edit Template - Add Label - Edit Databinding - Eval - Add Field Name - Ok






Next - Delete Column - Add LinkButton - Text - Delete




Next - Add Namespaces- & Database Connection 






Next - Add - New Folder(files) - Solution Explorer  - Add Insert Query






Next - Select Query  Display to  GridView








Next - Delete Button Click - File Delete From Server Folder 






Next - Gridview Bind Coding 




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