执行多个sql命令时遇到问题。我需要多次更新数据。 frist sql查询是否考虑两种情况,否则;但是第二个和第三个sqlcommand将在if或else中相应。 问题是只有一个sqlcommand正常工作,那些位于循环内部。
public void Button_Submit_Onclick(object sender, EventArgs e)
{
for (int i = 0; i < GridView2.Rows.Count; i++)
{
con.ConnectionString = ConfigurationManager.ConnectionStrings["TestDeductionsConnectionString2"].ToString();
int recordid = Convert.ToInt32(GridView2.DataKeys[i].Values[0]);
CheckBox cbox = (CheckBox)GridView2.Rows[i].FindControl("CheckBox1");
bool private1 = Convert.ToBoolean(cbox.Checked);
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = "Update DetailCosts set private='" + private1 + "' where recordid=" + recordid;
con.Open();
if (private1==true)
{
cmd.CommandText = "Update DetailCosts set privateCost=Costs where recordid=" + recordid;
cmd.Parameters.AddWithValue("@private1", SqlDbType.Bit).Value = private1;
cmd.Parameters.AddWithValue("@recordid", SqlDbType.Int).Value = recordid.ToString();
}
else
{
cmd.CommandText = "Update DetailCosts set privateCost=0 where recordid=" + recordid;
cmd.Parameters.AddWithValue("@recordid", SqlDbType.Int).Value = recordid.ToString();
cmd.Parameters.Add("@private1", SqlDbType.Bit).Value = private1;
}
cmd.ExecuteNonQuery();
con.Close();
}
}
答案 0 :(得分:2)
您需要执行要执行的每个命令,因此您应该添加
cmd.ExecuteNonQuery();
在第一次查询之后也要执行它。
如果你想要两者都被执行而不是一个失败你应该实现transactions并在事务中包装两个查询。
答案 1 :(得分:-1)
这是一个有效的代码:
public void Button_Submit_Onclick(object sender, EventArgs e)
{
for (int i = 0; i < GridView2.Rows.Count; i++)
{
con.ConnectionString = ConfigurationManager.ConnectionStrings["TestDeductionsConnectionString2"].ToString();
int recordid = Convert.ToInt32(GridView2.DataKeys[i].Values[0]);
//bool private1 = Convert.ToBoolean(GridView2.FindControl("CheckBox1"));
CheckBox cbox = (CheckBox)GridView2.Rows[i].FindControl("CheckBox1");
bool private1 = Convert.ToBoolean(cbox.Checked);
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
con.Open();
cmd.CommandText = "Update DetailCosts set private='" + private1 + "' where recordid=" + recordid;
cmd.Parameters.AddWithValue("@private1", SqlDbType.Bit).Value = private1;
cmd.Parameters.AddWithValue("@recordid", SqlDbType.Int).Value = recordid.ToString();
cmd.ExecuteNonQuery();
if (private1==true)
{
//DateTime date = DateTime.Now;
//cmd.CommandText = "Update AprovedCosts set AprovedCosts.AprovalUser = ";
cmd.CommandText = "Update DetailCosts set privateCost=Costs where recordid=" + recordid;
cmd.ExecuteNonQuery();
}
else
{
cmd.CommandText = "Update DetailCosts set privateCost=0 where recordid=" + recordid;
cmd.ExecuteNonQuery();
}
con.Close();
}