lblImage.ImageUrl = dt.Rows[0]["ImageUrl"].ToString();

 

2.

 string ImageUrl = "";

 
3.

ImageUrl = lblImage.ImageUrl;

图像以二进制格式存储在数据库中，并检索其各自的内容类型.
以下是一些有用的链接，可帮助您从数据库中存储和检索图像.

如何从SQL Server存储和获取图像 [将图像存储在sqlserver中 [保存和读取图像数据库 [

The images are stored in database are in binary format and retrive with their respective content type.
Here are some useful links that helps you to store and retrive images from database.

how to store and fetch images from SQL server[^]

store images in sqlserver[^]

Save and Read Image Database[^]

1.

lblImage.ImageUrl = dt.Rows[0]["ImageUrl"].ToString();

2.

2.

string ImageUrl = "";

3.

3.

ImageUrl = lblImage.ImageUrl;