在图像控件中显示来自db的图像，与其他asp.net控件一起显示_Asp.net_Sql Server_Database_Vb.net_Image

在图像控件中显示来自db的图像，与其他asp.net控件一起显示

asp.net sql-server database vb.net image

在图像控件中显示来自db的图像，与其他asp.net控件一起显示,asp.net,sql-server,database,vb.net,image,Asp.net,Sql Server,Database,Vb.net,Image,数据库是SQL Server。在数据库中，图像（而不是图像路径）存储为varbinarymax 如何显示数据库中的图像以及其他控件（如标签和文本框），这些控件的内容也可以从数据库中检索我已经看过并尝试过很多教程，但它们要么用C语言编写，要么不起作用，要么向您演示如何仅显示图像，或者在gridview中显示图像欢迎使用示例代码。首先，您必须在我们的解决方案中创建图像文件夹然后写下这个方法 imageTest table --------------- imgName ( varchar

数据库是SQL Server。在数据库中，图像（而不是图像路径）存储为varbinarymax

如何显示数据库中的图像以及其他控件（如标签和文本框），这些控件的内容也可以从数据库中检索

我已经看过并尝试过很多教程，但它们要么用C语言编写，要么不起作用，要么向您演示如何仅显示图像，或者在gridview中显示图像

欢迎使用示例代码。

首先，您必须在我们的解决方案中创建图像文件夹然后写下这个方法

imageTest table
---------------
imgName ( varchar )
contentType ( varchar )
data ( varbinary(max) )


<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>

    <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
    <br />
    <br />
    <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
    <br />
    <br />
    <br />
    <asp:Image ID="Image1" runat="server" />

</div>
</form>

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

Partial Class _Default
Inherits System.Web.UI.Page

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load

    Dim strCon As String = ConfigurationManager.ConnectionStrings("ConnectionString1").ConnectionString
    Dim con As New SqlConnection(strCon)
    Dim cmd As New SqlCommand()
    cmd.Connection = con
    cmd.CommandType = CommandType.Text

    Dim strSelect As String = "SELECT * FROM [imageTest] WHERE [id] = 1"
    cmd.CommandText = strSelect
    con.Open()
    Dim reader As SqlDataReader = cmd.ExecuteReader() 'must be after con.open()

    If (reader.Read()) Then 'must include for reader

        Label1.Text = reader(0).ToString

        Label2.Text = reader(1).ToString()

        reader.Close()

        con.Close()

    End If

End Sub
End Class

public static int imageupload(string imagename,string imagepath)
        {

        var value = 0;
        try
        {
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["dbconnection"].ToString());
        //Open the database connection
        con.Open();
        //Query to insert images path and name into database
        SqlCommand cmd = new SqlCommand("Insert into imagetable(imagename,image) values(@imagename,@image)", con);
        //Passing parameters to query
        cmd.Parameters.AddWithValue("@imagename",imagename);
        cmd.Parameters.AddWithValue("@image", imagepath);
        cmd.ExecuteNonQuery();
        value = 1;
        //Close dbconnection
        con.Close();
         }
        catch(Exception ex)
        {
            throw ex;
        }
        return value;
    }

protected void Button1_Click(object sender, EventArgs e)
    {
        string filename = Path.GetFileName(fileuploadimages1.PostedFile.FileName);
        fileuploadimages1.SaveAs(Server.MapPath("Images/" + filename));
        int a = testapp.imageupload(TextBox1.Text, "Images/" + filename);

        if(a==1)
        {
            Response.Write(@"<script language='javascript'>alert('saved secussfully')</script>");
            Response.Redirect("home.aspx");
        }
        else
        {
            Response.Write(@"<script language='javascript'>alert('error whie saving image')</script>");
        }

    }