查找日期時間列在gridview與當前日期asp.net c＃

Question

我有一個gridview，以及一個日期列的MM/dd/yyyy格式。 如果日期小於當前日期，我需要在我的gridview中突出顯示行。

我的代碼去，

protected void grdAssignment_RowDataBound(object sender, GridViewRowEventArgs e) 
    { 
     try 
     { 

      if (e.Row.RowType == DataControlRowType.DataRow) 
      { 
       string curDate = DateTime.Now.ToString("MM'/'dd'/'yyyy"); 
       if (e.Row.Cells[2].Text < Convert.ToString(curDate)) 
       { 
        //color code 
       } 
     } 
} 

Error: String was not recognized as a valid DateTime.

Answer 1

try 
    { 
     if (e.Row.RowType == DataControlRowType.DataRow) 
     { 
      DateTime dtRow = DateTime.ParseExact(e.Row.Cells[2].Text, "MM/dd/yyyy", CultureInfo.InvariantCulture); 
      DateTime curDate = DateTime.Now; 
      int result = DateTime.Compare(dtRow, curDate); 
      if (result < 0) 
      { 
       //color code 
      } 
    } 

注：您需要添加using System.Globalization;使用CultureInfo.InvariantCulture

Answer 2

試試這一個。

if (e.Row.RowType == DataControlRowType.DataRow) 
     { 
      DateTime curDate = DateTime.Now 
      if (Convert.ToDateTime(e.Row.Cells[2].Text) < curDate) 
      { 
       //color code 
      } 
    } 

Answer 3

爲了避免錯誤，使用的TryParse

if (e.Row.RowType == DataControlRowType.DataRow) 
{ 
      DateTime dt; 
      if (DateTime.TryParse(e.Rows.Cells(2).Text, out dt)) 
      { 
       if (dt < DateTime.Now) 
       { 
        //color code 
       } 
      } 
}