这篇文章主要介绍了上传图片后使用数据库保存图片的示例,需要的朋友可以参考下

代码如下:

HttpPostedFile UpFile = File1.PostedFile;

int FileLenght = UpFile.ContentLength;

decimal FileSize = FileLenght / 1024;

if (FileLenght == 0)

{

DIVShowGVError.Visible = true;

LblShowGVError.Text = "请选择上传文件";

return;

}

string strImageName = UpFile.FileName;

string strImageType = strImageName.Substring(strImageName.LastIndexOf(".")).ToLower();

if (strImageType != ".jpg" && strImageType != ".jpeg" && strImageType != ".bmp" && strImageType != ".png")

{

DIVShowGVError.Visible = true;

LblShowGVError.Text = "請上傳以下文件格式的圖片：jpg,jpeg,bmp,png";

return;

}

if (FileSize > 2048)

{

DIVShowGVError.Visible = true;

LblShowGVError.Text = "上傳圖片不能大於2M";

return;

}

else

{

Byte[] FileByteArray = new Byte[FileLenght];

Stream StreamObject = UpFile.InputStream;

StreamObject.Read(FileByteArray, 0, FileLenght);

strNewLeave = "insert into [Leave]([ID],[EmployeeNo],[AgentID],[LeaveType],[StartDate],[EndDate],[Hours],[LeaveR

eason],[ReportTime],[ReportID],[ImageName],[ImageData]) ";

strNewLeave += "values(@LeaveNo,@EmpNo,@AgentName,@LeaType,@StartDate,@EndDate,@Hours,@Reason,getdate(),@Adm

in,@ImageName,@Image) ";

sqlPara = new SqlParameter[] {

new SqlParameter("@LeaveNo",strLeaNo),

new SqlParameter("@EmpNo",strEmpNo),

new SqlParameter("@AgentName",strAgentID),

new SqlParameter("@LeaType",strLeaType),

new SqlParameter("@StartDate",strDateSt),

new SqlParameter("@EndDate",strDateEnd),

new SqlParameter("@Hours",strHours),

new SqlParameter("@Reason",strReason),

new SqlParameter("@Admin",strAdmin),

new SqlParameter("@ImageName",strImageName),

new SqlParameter("@Image",FileByteArray)

};

StreamObject.Close();

}

代码如下:

SQLHelper sqlH = new SQLHelper();

string strID = context.Request["ID"];

byte[] MyData = new byte[0];

string str = " select [ImageData] from [Leave] where [ID]='" + strID + "' ";

DataTable dt = sqlH.ExecuteQuery(str, CommandType.Text);

if (dt.Rows.Count > 0)

{

MyData = (byte[])dt.Rows[0][0];

int ArraySize = MyData.GetUpperBound(0);

context.Response.OutputStream.Write(MyData, 0, ArraySize);

}

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