如何从asp.net中选择参数化查询
我想为select语句编写参数化查询。但它给出了必须声明变量“@”的异常。如何声明这个变量 我的代码如下:如何从asp.net中选择参数化查询,asp.net,Asp.net,我想为select语句编写参数化查询。但它给出了必须声明变量“@”的异常。如何声明这个变量 我的代码如下: SqlConnection con = null; SqlCommand cmd = null; try { //int @[MONTH_FOR], @[YEAR_FOR]; con = new SqlConnection("Data Source=192.168.10.3;Initial Ca
SqlConnection con = null;
SqlCommand cmd = null;
try
{
//int @[MONTH_FOR], @[YEAR_FOR];
con = new SqlConnection("Data Source=192.168.10.3;Initial Catalog=GPSTrainees;user id=gp;password=gp");
con.Open();
string select = @"SELECT [COMPONENT_NAME] ,[COMPONENT_AMOUNT]
FROM [GoalPlanForTrainees].[gp].[TEAM_FUNDS_DETAILS]
WHERE [MONTH_FOR] = @[MONTH_FOR] AND [YEAR_FOR] = @[YEAR_FOR]";
cmd = new SqlCommand(select, con);
cmd.Parameters.Add(new SqlParameter("@[MONTH_FOR]", Convert.ToInt32( TextBox1.Text.Trim())));
cmd.Parameters.Add(new SqlParameter("@[YEAR_FOR]",Convert.ToInt32(TextBox2.Text.Trim())));
DataSet ds = new DataSet();
SqlDataAdapter adp = new SqlDataAdapter(select, con);
adp.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
}
catch (Exception ex)
{
}
finally
{
if (con != null)
{
con.Close();
}
}`enter code here`
将变量声明放在sql语句中。因此,把时间移到"月","年",; 到 @整数[月份],[年份];从[GoalPlanForTrainees].[gp].[TEAM\u FUNDS\u DETAILS]中选择[COMPONENT\u NAME]、[COMPONENT\u AMOUNT],其中[MONTH\u FOR]=@[MONTH\u FOR]和[YEAR\u FOR]=@[YEAR\u FOR]
干杯跳跳虎创建参数时,请删除参数名称前的@。大概是这样的:
cmd.Parameters.Add(new SqlParameter("[MONTH_FOR]", Convert.ToInt32(TextBox1.Text.Trim())));
希望这会有所帮助。试试这个
int MONTH_FOR=@monthFor
command.Parameters.Add(MONTH_FOR, SqlDbType.int).Value = value
是这样吗?msdn示例显示了带有参数名称的@。