Returning a single row

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轻奢々
轻奢々 2021-02-13 06:55

I\'m trying to return a single row from a database:

using (connection = new SqlConnection(ConfigurationManager.AppSettings[\"connection\"]))
{
    using (command         


        
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  •  不要未来只要你来
    2021-02-13 07:45

    The problem is the return type. The method you are in is expecting you to return a string, but reader["col_1"] is an object. I suggest returning reader["col_1"].ToString() or Convert.ToString(reader["col_1"]).

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