從SQL將Datetime格式轉換為Date並綁定到Gridview僅日期

Question

using (con = new SqlConnection(con_str))
{
    con.Open();
    string sql = "select mcfact as Factory, mcarea as Department, mcloc as Location, mcroom as Room, mcline as Line, cast (scanned as date) from tb_MachineRecord where mcidno='" + cmbmcidno.Text + "' ";
    da = new SqlDataAdapter(sql, con);
    DataSet ds = new DataSet();
    da.Fill(ds);
    GridView7.DataSource = ds;
    GridView7.DataBind();
    con.Close();
}

使用此代碼，輸出的時間像03/05/2016 00:00:00但是當我在SQL中運行此查詢時，它顯示的是正確的輸出，如2016-05-03

Answer 1

您可以使用datatable的dt對象代替ds，例如：

 using (con = new SqlConnection(con_str))
    {
    con.Open();
    string sql = "select mcfact as Factory, mcarea as Department, mcloc as Location, mcroom as Room, mcline as Line, cast (scanned as date) as date from tb_MachineRecord where mcidno='" + cmbmcidno.Text + "' ";
    da = new SqlDataAdapter(sql, con);
    Datatable dt=new datatable();
    da.Fill(dt);

   foreach(DataRow rows in dt.rows.Count)
   {
      rows["date"]=Convert.ToDateTime(rows["date"].toString()).toString("dd/MM/yyyy"));
   }
    GridView7.DataSource = dt;
    GridView7.DataBind();
    con.Close();
   }

Answer 2

如果您使用BoundFields ，則可以執行此操作

<asp:BoundField DataField="myDBdate" DataFormatString="{0:f}" />

有關更多BoundField DateTime格式，請參見Microsoft網站 。

如果您使用TemplateFields ，則可以執行以下操作：

<ItemTemplate><%# Convert.ToDateTime(Eval("myDBdate")).ToShortDateString() %></ItemTemplate>

有關更多DateTime格式，請訪問Microsoft網站 。

Answer 3

我認為你應該使用

select name,CONVERT(VARCHAR(10),date_of_birth,120) from tbl_Login

date_of_birth是日期時間類型列

Answer 4

using (con = new SqlConnection(con_str))
{
    con.Open();
    string sql = "select mcfact as Factory, mcarea as Department, mcloc as Location, mcroom as Room, mcline as Line, CONVERT(VARCHAR(10),scanned,120) from tb_MachineRecord where mcidno='" + cmbmcidno.Text + "' ";
    da = new SqlDataAdapter(sql, con);
    DataSet ds = new DataSet();
    da.Fill(ds);
    GridView7.DataSource = ds;
    GridView7.DataBind();
    con.Close();
}