1、效果：
2、处理方法：
/// <summary>
/// insert single sql
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="sql"></param>
/// <param name="param"></param>
/// <param name="connectionString"></param>
/// <returns></returns>
public static int Insert<T>(string sql, dynamic param = null, string connectionString = null) where T : class, new()
{
using (IDbConnection conn = OpenConnection(connectionString))
{
return conn.Execute(sql, (object)param,null,null,null);
}
}
public static readonly string InsertSql = @"Insert into SpreadApiErrorMsgs(Id,ControllerName,ActionName,Message,SoluWay,CreateDate)
values(@Id,@ControllerName,@ActionName,@Message,@SoluWay,@CreateDate)";
/// <summary>
/// insert single sql
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="sql"></param>
/// <param name="param"></param>
/// <param name="connectionString"></param>
/// <returns></returns>
public static int Insert<T>(string sql, dynamic param = null, string connectionString = null) where T : class, new()
{
using (IDbConnection conn = OpenConnection(connectionString))
{
return conn.Execute(sql, (object)param,null,null,null);
}
}
PS：Dapper源码：
/// <summary>
/// This class represents a SQL string, it can be used if you need to denote your parameter is a Char vs VarChar vs nVarChar vs nChar
/// </summary>
sealed partial class DbString : Reasonable.Spread.Dapper.SqlMapper.ICustomQueryParameter
{
/// <summary>
/// Create a new DbString
/// </summary>
public DbString() { Length = -; }
/// <summary>
/// Ansi vs Unicode
/// </summary>
public bool IsAnsi { get; set; }
/// <summary>
/// Fixed length
/// </summary>
public bool IsFixedLength { get; set; }
/// <summary>
/// Length of the string -1 for max
/// </summary>
public int Length { get; set; }
/// <summary>
/// The value of the string
/// </summary>
public string Value { get; set; }
/// <summary>
/// Add the parameter to the command... internal use only
/// </summary>
/// <param name="command"></param>
/// <param name="name"></param>
public void AddParameter(IDbCommand command, string name)
{
if (IsFixedLength && Length == -)
{
throw new InvalidOperationException("If specifying IsFixedLength, a Length must also be specified");
}
var param = command.CreateParameter();
param.ParameterName = name;
param.Value = (object)Value ?? DBNull.Value;
if (Length == - && Value != null && Value.Length <= )
{
param.Size = ;
}
else
{
param.Size = Length;
}
param.DbType = IsAnsi ? (IsFixedLength ? DbType.AnsiStringFixedLength : DbType.AnsiString) : (IsFixedLength ? DbType.StringFixedLength : DbType.String);
command.Parameters.Add(param);
}
}