C# 如何将SqlCommand类型转换为Int类型

我想将SqlCommand结果转换为Int值，我该怎么做？？ 请帮助我，我尝试的内容如下：

表中的stp_no已设置标识属性。我想将自动生成的数字插入到另一个表中，但它总是显示错误，如“connt Convert SqlCommand Type To Int Type”

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请帮助M解决此问题：）

juergen的答案应该有效，您必须先执行命令，然后将结果用作下一步：

int id = int.Parse(snocmd.ExecuteScalar().ToString());
dvgcmd = new SqlCommand("INSERT INTO MaterialTestDetail(stp_no,test_no,test_name,test_type,test_spec,high_limit,low_limit)" +
                                                 "VALUES('"+ id +"','" + @matTstDataGridView.Rows[j].Cells[0].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[1].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[2].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[3].Value + "'," + 
                                                         " '" + @matTstDataGridView.Rows[j].Cells[4].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[5].Value + "')", con);

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它给出错误“上下文中不允许子查询。允许使用Ony Scaler表达式”。ExecuteScaler（）将仅插入第一条记录，因此当我尝试插入另一条记录时，它将给出主键约束错误，因为MaterialTestDetail hve stp_no是主键。您可以将命令更改为：snocmd=newsqlcommand（“从MaterialTestMaster中选择MAX（stp_no）”，con）；但是，如果没有为每个要插入的MaterialTestDetail插入至少一个MaterialMaster，则可能会出现相同的问题。

SqlCommand dvgcmd;
dvgcmd = new SqlCommand("INSERT INTO MaterialTestDetail(stp_no,test_no,test_name,test_type,test_spec,high_limit,low_limit)" +
                                                 "VALUES((SELECT stp_no FROM MaterialTestMaster),'" + @matTstDataGridView.Rows[j].Cells[0].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[1].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[2].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[3].Value + "'," + 
                                                         " '" + @matTstDataGridView.Rows[j].Cells[4].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[5].Value + "')", con);

int id = int.Parse(snocmd.ExecuteScalar().ToString());
dvgcmd = new SqlCommand("INSERT INTO MaterialTestDetail(stp_no,test_no,test_name,test_type,test_spec,high_limit,low_limit)" +
                                                 "VALUES('"+ id +"','" + @matTstDataGridView.Rows[j].Cells[0].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[1].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[2].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[3].Value + "'," + 
                                                         " '" + @matTstDataGridView.Rows[j].Cells[4].Value + "'," +
                                                         " '" + @matTstDataGridView.Rows[j].Cells[5].Value + "')", con);