c#中带参数sql查询
System.Data.SqlClient.SqlParameter[] parameters = {
new SqlParameter("@Model_GUID", SqlDbType.UniqueIdentifier),
new SqlParameter("@Model_Name", SqlDbType.NVarChar,50),
new SqlParameter("@Model_Desp", SqlDbType.NVarChar,500),
new SqlParameter("@Model_IsSys", SqlDbType.Bit)
};
parameters[0].Value = new Guid("F3CD1369-58C0-4A1F-AF88-05FCF734E079");
parameters[1].Value = "测试实体模型";
parameters[2].Value = "实体模型描述";
parameters[3].Value = false;
string connStr = @"Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=officially;Data Source=LCSNB"SQL2K";
string cmdStr = "insert into LCS_Sys_Model ([Model_GUID],[Model_Name],[Model_Desp],[Model_IsSys]) values ( @Model_GUID,@Model_Name,@Model_Desp,@Model_IsSys)";
System.Data.SqlClient.SqlConnection conn = new System.Data.SqlClient.SqlConnection(connStr);
System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(cmdStr);
cmd.Connection = conn;
foreach (var item in parameters)
{
cmd.Parameters.Add(item);
}
cmd.Connection.Open();
cmd.ExecuteNonQuery();
//第一次执行结束
cmd.Parameters.Clear();
cmd.CommandText = "SELECT SCOPE_IDENTITY()";
//System.Diagnostics.Debug.Assert(cmd.ExecuteScalar()==null);
Console.WriteLine(cmd.ExecuteScalar().ToString());
//第二次执行结束
cmd.Connection.Close();
Console.WriteLine("第一次测试结束");
Console.Read();
cmd.CommandText = "insert into lcs_Sys_Model ([Model_GUID],[Model_Name],[Model_Desp],[Model_IsSys]) values ( 'F3CD1369-58C0-4A1F-AF88-05FCF734E079','name','desp',1 )";
cmd.Connection.Open();
cmd.ExecuteNonQuery();
cmd.CommandText = "SELECT SCOPE_IDENTITY()";
Console.WriteLine(cmd.ExecuteScalar().ToString());
cmd.Connection.Close();
Console.WriteLine("第二次测试结束");
Console.Read();
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