如何在一個gridview的列添加不同時間存在並顯示文本框頁腳的總和

Question

我有一些值（08：12,09：22,01：09）在塔（日期時間）在一個gridview
我想要的是在該列的頁腳中存在的文本框中獲得該列中存在的所有值的總和。

我嘗試下面的代碼 -

int hours, minutes; 
    TextBox footxt = (TextBox)GridView2.FooterRow.FindControl("footxt1"); 
    foreach (GridViewRow row in GridView2.Rows) 
    { 
     TextBox txts = (TextBox)row.FindControl("text11"); 

     TimeSpan ts = TimeSpan.Parse(txts.Text); 
     hours = ts.Hours; 
     minutes = ts.Minutes; 
     hours += hours; 
     minutes += minutes; 
    footxt.Text = Convert.ToString(hours); 
    } 

但它不工作！

Answer 1

使用時間跨度的operator +：

TimeSpan total = new TimeSpan(); 
TextBox footxt = (TextBox)GridView2.FooterRow.FindControl("footxt1"); 
foreach (GridViewRow row in GridView2.Rows) 
{ 
    TextBox txts = (TextBox)row.FindControl("text11"); 
    total += TimeSpan.Parse(txts.Text); 
} 
footxt.Text = Convert.ToString(hours); 

Answer 2

您可以將ty有 - hours and hoursCpt

... 
    hours = ts.Hours; 
    minutes = ts.Minutes; 
    hoursCpt += hours; 

所以

int hours, minutes, hoursCpt, minutesCpt; 
hoursCpt = 0; 
minutesCpt = 0; 

TextBox footxt = (TextBox)GridView2.FooterRow.FindControl("footxt1"); 
foreach (GridViewRow row in GridView2.Rows) 
{ 
    TextBox txts = (TextBox)row.FindControl("text11"); 

    TimeSpan ts = TimeSpan.Parse(txts.Text); 
    hours = ts.Hours; 
    minutes = ts.Minutes; 

    hoursCpt += hours; 
    minutesCpt += minutes; 
} 
footxt.Text = Convert.ToString(hoursCpt + ((minutesCpt - minutesCpt % 60)/60)); 

Answer 3

現在你通過每一次覆蓋hours你循環，所以你添加到它，但再擦出來當你回到下一個價值。

int totHours, totMinutes 
TextBox footTxt = (TextBox)GridView2.FooterRow.FindControl("footxt1"); 

foreach (GridViewRow row in GridView2.Rows) 
{ 
    TextBox txts = (TextBox)row.FindControl("text11"); 
    TimeSpan ts = TimeSpan.Parse(txts.Text); 

    totHours += ts.Hours; 
    totMinutes += ts.Minutes; 

} 
footTxt.Text = totHours.ToString();