Hi akshay806,

Check this example. Now please take its reference and correct your code.

To consume ASMX Web Service refer the below article.

Call (Consume) Web Service (ASMX) in ASP.Net web application using C# and VB.Net

Database

For this sample I have created a simple table tblFiles with the following structure.

You can download the database table SQL by clicking the download link below.

Download SQL file

ASMX Webservice

C#

using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Web.Services;

/// <summary>
/// Summary description for FileUploadService
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
// [System.Web.Script.Services.ScriptService]
public class FileUploadService : System.Web.Services.WebService
{

    public FileUploadService()
    {
        //Uncomment the following line if using designed components 
        //InitializeComponent(); 
    }

    [WebMethod]
    public void UploadFile(string name, string contentType, byte[] byteArray)
    {
        string conString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
        using (SqlConnection con = new SqlConnection(conString))
        {
            using (SqlCommand cmd = new SqlCommand("INSERT INTO tblFiles VALUES(@Name,@ContentType,@Data)", con))
            {
                cmd.CommandType = CommandType.Text;
                cmd.Parameters.AddWithValue("@Name", name);
                cmd.Parameters.AddWithValue("@ContentType", contentType);
                cmd.Parameters.AddWithValue("@Data", byteArray);
                con.Open();
                cmd.ExecuteNonQuery();
                con.Close();
            }
        }
    }
}

VB.Net

Imports System.Web
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.Data
Imports System.Data.SqlClient

' To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
' <System.Web.Script.Services.ScriptService()> _
<WebService(Namespace:="http://tempuri.org/")> _
<WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Public Class FileUploadService
    Inherits System.Web.Services.WebService

    <WebMethod()>
    Public Sub UploadFile(ByVal name As String, ByVal contentType As String, ByVal byteArray As Byte())
        Dim conString As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
        Using con As SqlConnection = New SqlConnection(conString)
            Using cmd As SqlCommand = New SqlCommand("INSERT INTO tblFiles VALUES(@Name,@ContentType,@Data)", con)
                cmd.CommandType = CommandType.Text
                cmd.Parameters.AddWithValue("@Name", name)
                cmd.Parameters.AddWithValue("@ContentType", contentType)
                cmd.Parameters.AddWithValue("@Data", byteArray)
                con.Open()
                cmd.ExecuteNonQuery()
                con.Close()
            End Using
        End Using
    End Sub
End Class

HTML

<asp:FileUpload ID="fuUpload" runat="server" />
<asp:Button ID="btnSave" Text="Save" runat="server" OnClick="Save" />

Namespace

You will need to import the following namespace.

C#

using System.IO;

VB.Net

Imports System.IO

Code

C#

protected void Save(object sender, EventArgs e)
{
    if (fuUpload.HasFile)
    {
        string name = fuUpload.FileName;
        string contentType = fuUpload.PostedFile.ContentType;
        byte[] byteArray;
        using (Stream stream = fuUpload.PostedFile.InputStream)
        {
            using (BinaryReader binaryReader = new BinaryReader(stream))
            {
                byteArray = binaryReader.ReadBytes((Int32)stream.Length);
            }
        }
        UploadService.FileUploadServiceSoapClient soapClient = new UploadService.FileUploadServiceSoapClient();
        soapClient.UploadFile(name, contentType, byteArray);
    }
}

VB.Net

Protected Sub Save(ByVal sender As Object, ByVal e As EventArgs)
    If fuUpload.HasFile Then
        Dim name As String = fuUpload.FileName
        Dim contentType As String = fuUpload.PostedFile.ContentType
        Dim byteArray As Byte()
        Using stream As Stream = fuUpload.PostedFile.InputStream
            Using binaryReader As BinaryReader = New BinaryReader(stream)
                byteArray = binaryReader.ReadBytes(CType(stream.Length, Int32))
            End Using
        End Using

        Dim soapClient As UploadService.FileUploadServiceSoapClient = New UploadService.FileUploadServiceSoapClient()
        soapClient.UploadFile(name, contentType, byteArray)
    End If
End Sub

After saving the database table looks like below.

Screenshot