C# 数据集赢得'；t将图像更新到数据库

我试图将图像插入SQL Server数据库，它会进入数据集，但当调用save方法时，SQL Server不会更改

public void AddImage(OpenFileDialog openFileDialog1, List<Movie> movieList)
{
    byte[] movieCover = null;
    FileStream movieStream = new FileStream(openFileDialog1.FileName, FileMode.Open, FileAccess.Read);
    BinaryReader movieReader = new BinaryReader(movieStream);
    movieCover = movieReader.ReadBytes((int)movieStream.Length);
    var Starwars = new object[2];
    Starwars[0] = "Star Wars: Episode I - The Phantom Menace";
    Starwars[1] = "1999";
    var found = _movieSet.Tables["Movie"].Rows.Find(Starwars);

    if (found != null)
    {
        found.SetField("Cover", movieCover);
        var movieListFound = movieList.Find(x => x.Name == Starwars[0]);
    }
    else
        MessageBox.Show("Movie Not Found");
}

---

添加新行是可行的，但在调用save方法时，对实际数据集的任何更改都不会更新，不仅是image，而且如果我在调试中使用数据可视化工具更改表数据，也不会更新

一天后，我再次回答了自己的问题，希望得到更好的回答，但我想我的信息肯定不是最好的

我需要在Addimage方法期间调用Save（）方法

public void AddImage(OpenFileDialog openFileDialog1, List<Movie> movieList)
{
     byte[] movieCover = null;
     FileStream movieStream = new FileStream(openFileDialog1.FileName, FileMode.Open, FileAccess.Read);
     BinaryReader movieReader = new BinaryReader(movieStream);
     movieCover = movieReader.ReadBytes((int)movieStream.Length);
     var Starwars = new object[2];
     Starwars[0] = "Star Wars: Episode I - The Phantom Menace";
     Starwars[1] = 1999;
     var found = MovieTable().Rows.Find(Starwars);
     if (found != null)
     {
         found["Cover"] = movieCover;
         var movieListFound = movieList.Find(x => x.Name == Starwars[0]);
     }
     else
         MessageBox.Show("Movie Not Found");
     Save();

public void AddImage（OpenFileDialog openFileDialog1，List movieList）
{
字节[]movieCover=null；
FileStream movieStream=newfilestream（openFileDialog1.FileName，FileMode.Open，FileAccess.Read）；
BinaryReader movieReader=新的BinaryReader（movieStream）；
movieCover=movieReader.ReadBytes（（int）movieStream.Length）；
var Starwars=新对象[2]；
《星球大战》[0]=“星球大战：第一集——幽灵的威胁”；
星战[1]=1999年；
var found=MovieTable（）.Rows.Find（星战）；
如果（找到！=null）
{
找到[“封面”]=电影封面；
var movieListFound=movieList.Find（x=>x.Name==Starwars[0]）；
}
其他的
MessageBox.Show（“未找到电影”）；
Save（）；

}

public void AddImage(OpenFileDialog openFileDialog1, List<Movie> movieList)
{
     byte[] movieCover = null;
     FileStream movieStream = new FileStream(openFileDialog1.FileName, FileMode.Open, FileAccess.Read);
     BinaryReader movieReader = new BinaryReader(movieStream);
     movieCover = movieReader.ReadBytes((int)movieStream.Length);
     var Starwars = new object[2];
     Starwars[0] = "Star Wars: Episode I - The Phantom Menace";
     Starwars[1] = 1999;
     var found = MovieTable().Rows.Find(Starwars);
     if (found != null)
     {
         found["Cover"] = movieCover;
         var movieListFound = movieList.Find(x => x.Name == Starwars[0]);
     }
     else
         MessageBox.Show("Movie Not Found");
     Save();