Asp.net 2.0(C#)图片存储到数据库和从数据库读取显示

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Asp.net 2.0(C#)图片存储到数据库和从数据库读取显示

最近捣鼓了一下，效果就是这样：
图1：

图2：

ImageFileUpload.aspx：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ImageFileUpload.aspx.cs" Inherits="ImageFileUpload" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>图片保存和显示</title>
</head>
<body>
    <form id="Form2" enctype="multipart/form-data" runat="server">

            <asp:Table ID="Table1" Runat="server" Width="39%" BorderWidth="1" BackColor="Beige">

                        <asp:TableRow runat="server">

                                    <asp:TableCell ColumnSpan="2" BackColor="Red" runat="server">

                                    <asp:Label ID="Label1" Font-size="12px" ForeColor="White" font-bold="True" Runat="server" Text="添加" Font-Names="verdana" />

                                    </asp:TableCell>

                        </asp:TableRow>

                        <asp:TableRow runat="server">

                                    <asp:TableCell HorizontalAlign="Right" runat="server"><asp:Label ID="Label2" Font-size="12px"  Runat="server" Text="名字" Font-Names="verdana" /></asp:TableCell>

                                    <asp:TableCell runat="server"><asp:TextBox id="txtPersonName" Runat="server" /></asp:TableCell>

                        </asp:TableRow>

                        <asp:TableRow runat="server">

                                    <asp:TableCell HorizontalAlign="Right" runat="server"><asp:Label ID="Label3" Font-size="12px"  Runat="server" Text="Email" Font-Names="verdana" /></asp:TableCell>

                                    <asp:TableCell runat="server"><asp:TextBox id="txtPersonEmail" Runat="server" /></asp:TableCell>

                        </asp:TableRow>

                        <asp:TableRow runat="server">

                                    <asp:TableCell HorizontalAlign="Right" runat="server"><asp:Label ID="Label4" Font-size="12px"  Runat="server" Text="性别" Font-Names="verdana" /></asp:TableCell>

                                    <asp:TableCell runat="server">

                                                <asp:RadioButton GroupName="sex"  Font-Size="12px" Text="男性" ID="sexMale" Runat="server" 　 Checked="true" />

                                                <asp:RadioButton GroupName="sex"  Font-Size="12px" Text="女性" ID="sexFeMale" Runat="server" />

                                    </asp:TableCell>

                        </asp:TableRow>

                        <asp:TableRow runat="server">

                                    <asp:TableCell HorizontalAlign="Right" runat="server"><asp:Label ID="Label5" Font-size="12px"  Runat="server" Text="生日" Font-Names="verdana" /></asp:TableCell>

                                    <asp:TableCell runat="server"><asp:TextBox id="txtPersonDob" runat="server" /></asp:TableCell>

                        </asp:TableRow>

                        <asp:TableRow runat="server">

                                    <asp:TableCell HorizontalAlign="Right" runat="server"><asp:Label ID="Label6" Font-size="12px"  Runat="server" Text="图片" Font-Names="verdana" /></asp:TableCell>

                                    <asp:TableCell runat="server"><input type="file" id="PersonImage" runat="server" /></asp:TableCell>

                        </asp:TableRow>

                        <asp:TableRow runat="server">

                                    <asp:TableCell ColumnSpan="2" HorizontalAlign="Center" runat="server">

                                    <asp:Button ID="Button1" Text="添加" OnClick="AddPerson" runat="server" />

                                    </asp:TableCell>

                        </asp:TableRow>

            </asp:Table>
        <br />
        <table>
            <tr>
                <td align="left" valign="top" style=" 181px">
                    <asp:Label ID="Label_Message" runat="server" Font-Size="10pt"></asp:Label></td>
                <td style=" 7px">
                </td>
                <td align="left" style=" 18px" valign="top">
                </td>
            </tr>
            <tr>
                <td style=" 181px;" align="left" valign="top">
                    <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" DataKeyNames="PersonID" DataSourceID="SqlDataSource_SelectImage" ForeColor="#333333" OnSelectedIndexChanged="GridView1_SelectedIndexChanged" Font-Size="10pt" Width="200px" BackColor="#FFE0C0">
                        <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
                        <Columns>
                            <asp:TemplateField HeaderText="序号" InsertVisible="False" SortExpression="PersonID">
                                <EditItemTemplate>
                                    <asp:Label ID="Label1" runat="server" Text='<%# Eval("PersonID") %>'></asp:Label>
                                </EditItemTemplate>
                                <ItemTemplate>
                                    <asp:Label ID="Label1" runat="server" Text='<%# Bind("PersonID") %>'></asp:Label>
                                </ItemTemplate>
                                <HeaderStyle Width="35px" />
                            </asp:TemplateField>
                            <asp:BoundField DataField="PersonName" HeaderText="名字" SortExpression="PersonName" />
                            <asp:BoundField DataField="PersonImageType" HeaderText="图片类型" SortExpression="PersonImageType" />
                            <asp:CommandField ShowSelectButton="True" >
                                <ItemStyle Width="30px" />
                            </asp:CommandField>
                        </Columns>
                        <RowStyle BackColor="#EFF3FB" />
                        <EditRowStyle BackColor="#2461BF" />
                        <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
                        <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
                        <HeaderStyle BackColor="Red" Font-Bold="True" ForeColor="White" />
                        <AlternatingRowStyle BackColor="White" />
                    </asp:GridView>
                </td>
                <td style=" 7px; height: 180px;">
                </td>
                <td align="left" style=" 18px; height: 180px;" valign="top">
                    <asp:Image ID="Image_Show" runat="server" /></td>
            </tr>
            <tr>
                <td style=" 181px">
                    </td>
                <td style=" 7px">
                </td>
                <td style=" 18px">
                </td>
            </tr>
            <tr>
                <td style=" 181px; height: 21px;">
                </td>
                <td style=" 7px; height: 21px;">
                </td>
                <td style=" 18px; height: 21px;">
                </td>
            </tr>
        </table>
        <asp:SqlDataSource ID="SqlDataSource_SelectImage" runat="server" ConnectionString="<%$ ConnectionStrings:ImageSelect_ConnectionString %>"
            SelectCommand="SELECT PersonID, PersonName, PersonImageType FROM Person"></asp:SqlDataSource>

    </form>
</body>
</html>

ImageFileUpload.aspx.cs：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.IO;

public partial class ImageFileUpload : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    protected void AddPerson(object sender, EventArgs e)
    {
        int intImageSize;
        string strImageType;
        Stream ImageStream;

         intImageSize = PersonImage.PostedFile.ContentLength;
         ImageStream = PersonImage.PostedFile.InputStream;
         strImageType = PersonImage.PostedFile.ContentType;
        Byte[] ImageContent = new Byte[intImageSize];
        int  intStatus;
        intStatus = ImageStream.Read(ImageContent, 0, intImageSize);

        //string ConnStr = System.Configuration.ConfigurationSettings.AppSettings["Lw_SqlConnectString"];
        string ConnStr = "Data Source=127.0.0.1;Initial Catalog=Pfrmis_TZXY;User ID=sa";
        SqlConnection myConnection=new SqlConnection(ConnStr);
        SqlCommand  myCommand=new SqlCommand("sp_person_isp", myConnection);
        myCommand.CommandType = CommandType.StoredProcedure;

        SqlParameter prmEmail=new SqlParameter("@PersonEmail", SqlDbType.VarChar, 255);

        prmEmail.Value = txtPersonEmail.Text;
        myCommand.Parameters.Add(prmEmail);

        SqlParameter prmName=new SqlParameter("@PersonName", SqlDbType.VarChar, 255);

        prmName.Value = txtPersonName.Text;
        myCommand.Parameters.Add(prmName);

        SqlParameter prmSex =new SqlParameter("@PersonSex", SqlDbType.Char, 1);
        if (sexMale.Checked)
        {
            prmSex.Value = "M";
        }
        else
        {
             prmSex.Value = "F";
        }
        myCommand.Parameters.Add(prmSex);

        SqlParameter prmPersonDOB= new SqlParameter("@PersonDOB", SqlDbType.DateTime);

        prmPersonDOB.Value = txtPersonDob.Text;

        myCommand.Parameters.Add(prmPersonDOB);

        SqlParameter prmPersonImage =new SqlParameter("@PersonImage", SqlDbType.Image);

        prmPersonImage.Value = ImageContent;

        myCommand.Parameters.Add(prmPersonImage);

        SqlParameter prmPersonImageType =new SqlParameter("@PersonImageType", SqlDbType.VarChar, 255);

        prmPersonImageType.Value = strImageType;

        myCommand.Parameters.Add(prmPersonImageType);

        try
        {

            myConnection.Open();
            myCommand.ExecuteNonQuery();

            myConnection.Close();

            Response.Write("添加成功！");

        }
        catch(SqlException  SQLexc)
        {
            Response.Write("插入失败，错误如下： " + SQLexc.ToString());
        }


    }

    protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
    {

       // Session["id"] = "";

        Label lbl1;
        lbl1 = (Label)GridView1.SelectedRow.Cells[0].FindControl("Label1");

        Label_Message.Text ="你选择的图片是："+lbl1.Text;
        Session["id"] = lbl1.Text;
        Image_Show.ImageUrl = "ImageShow.aspx";
    }
}

ImageShow.aspx：(显示图片)

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ImageShow.aspx.cs" Inherits="ImageShow" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

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

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

ImageShow.aspx.cs:

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class ImageShow : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        //连接数据库的第一种方法
        SqlConnection myConnection = new SqlConnection(ConfigurationManager.AppSettings["Lw_SqlConnectString"]);

        //连接数据库的第二种方法
        //SqlConnection myConnection = new SqlConnection("Data Source=.;Initial Catalog=Tcis_shrl;User Id=sa;Password=;");
        if (Session["id"] == null)
        {

        }
        else
        {
            string sql = "Select PersonImage from Person Where PersonID=";
            SqlCommand myCommand = new SqlCommand(sql + Session["id"].ToString().Trim(), myConnection);

            try
            {
                myConnection.Open();
                SqlDataReader myDataReader;
                myDataReader = myCommand.ExecuteReader(CommandBehavior.CloseConnection);
                if (myDataReader.Read())
                {
                    Response.Clear();


                  //  Response.ContentType = "image/pjpeg";//可有可无
                    Response.BinaryWrite((byte[])myDataReader["PersonImage"]);
                }
                myConnection.Close();
            }
            catch (SqlException SQLexc)
            {
                 Response.Write(SQLexc);
            }
            Response.End();
        }
    }
}

最后一个存储过程：
Drop Table Person

Go

Create Table Person

(

PersonID Int Identity,

PersonEmail Varchar(255),

PersonName Varchar(255),

PersonSex Char(1),

PersonDOB DateTime,

PersonImage Image,

PersonImageType Varchar(255)

)

Drop Proc sp_person_isp

Go

Create Proc sp_person_isp

@PersonEmail Varchar(255),

@PersonName Varchar(255),

@PersonSex Char(1),

@PersonDOB DateTime,

@PersonImage Image,

@PersonImageType Varchar(255)

As

Begin

            Insert into Person

                        (PersonEmail, PersonName, PersonSex,

                         PersonDOB, PersonImage, PersonImageType)

            Values

                        (@PersonEmail, @PersonName, @PersonSex,

                         @PersonDOB, @PersonImage, @PersonImageType)

End

Go

Fighting

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原文地址：https://www.cnblogs.com/cry/p/623973.html