C# 从 SqlDataReader 获取 byte[]？
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时间：2020-08-10 10:11:45 来源:igfitidea点击:
Get byte[] from the SqlDataReader?
提问by akshaykumar6
I have table with varbinary(MAX)parameter. After executing the query, i will store the result in SqlDataReader as it has multiple columns as output.
我有带有varbinary(MAX)参数的表。执行查询后，我将结果存储在 SqlDataReader 中，因为它有多个列作为输出。
SqlCommand cmd = new SqlCommand("select leave_details from LeaveTable");
SqlDataReader obj;
con.Open();
obj = cmd.ExecuteReader();
Now I want to convert the result for each row into byte[].
现在我想将每一行的结果转换为 byte[]。
This one is not working : :
这个不起作用：：
byte[] b=null;
obj.GetBytes(0,0,b,0,1024);
采纳答案by adatapost
Try GetValue()method.
尝试GetValue()方法。
byte[] b=null;
b=(byte [])obj.GetValue(0);
//OR
b=(byte [])obj[0];
回答by Mahdi Tahsildari
string bytesfromsql = "01010101010110010111010001"; //for example
byte[] bytes = new byte[bytesfromsql.Length];
for (int i = 0; i < bytes.Count(); i++)
{
bytes[i] = byte.Parse(bytesfromsql[i].ToString());
}
