在asp.net c中选择开始日期和结束日期时，自动生成另一个文本框中的天数＃

本文介绍了在asp c中选择开始日期和结束日期时，自动生成另一个文本框中的天数＃的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个为员工创建休假申请的任务..它包含3个标签，其中一个带有申请休假，其中包含 1.type fo leave 2.描述 3.begin date 4.end date 5.天数 开始日期和结束日期包含日历扩展器，一旦我选择了两个日期，光标应该指向文本框的天数，它应该计算leav将采取的总天数...请帮我解决这个问题.. i试过这个

protected void BtnApply_Click（object sender，EventArgs e） { MTMSDTO objc = new MTMSDTO（）; int Flag = 0; LblLogdInUser.Text = Session [EmpName]。ToString（）; objc.LoggedInUser = LblLogdInUser.Text; objc.TypeofLeave = DrpTypeofLeave.SelectedItem.Text; 字符串日期; date = Convert.ToDateTime（TxtBeginDate.Text）.ToString（dd / MM / yyyy）; DateTime dt = new DateTime（）; dt = Convert.ToDateTime（date）; objc.BeginDate = dt; objc.EndDate = Convert.ToDateTime（TxtEndDate.Text）; objc.Description = TxtDescription.Text; objc.NumofDays = Convert.ToInt32（TxtNumofDays.Text）; //objc.EmpName = LblLogdInUser.Text; int X = obj.InsertLeave（objc）; { if（X> = 0） { Flag = 1; } else { Flag = 0; } } if（Flag == 1） { LblSuccess.Visible = true; LblSuccess.Text =数据已成功添加; DrpTypeofLeave.ClearSelection（）; TxtBeginDate.Text =; TxtEndDate.Text =; TxtDescription.Text =; TxtNumofDays.Text =; } 其他 { LblErr.Visible = true; LblErr.Text =无法添加数据!!!; } } protected void TxtNumofDays_TextChanged1（对象发送者，EventArgs e） { MTMSDTO objc = new MTMSDTO（）; objc.NumofDays = Convert.ToInt32（TxtNumofDays.Text）; TxtNumofDays.Focus（）; } protected void TxtEndDate_TextChanged（object sender，EventArgs e） { DateTime BeginDate = Convert.ToDateTime（TxtBeginDate.Text）; DateTime EndDate = Convert.ToDateTime（TxtEndDate.Text）; TimeSpan diff = EndDate.Subtract（BeginDate）; TxtNumofDays.Text = diff.Days.ToString（）; }

我在我的数据库中获取天数值，但它没有显示在文本框中，光标也没有指向到运行d prjct的天数的文本框..

解决方案

如果你的文本框被包装在一些更新面板中，那么确保面板在回发后得到更新

i got a task for creating leave application for the employees.. it contains 3 tabs one with apply leave which has 1.type fo leave 2.description 3.begin date 4.end date 5.number of days those begin and end date contains calendar extenders and once i select both dates , cursor should point on number of days textbox and it should calculate the total number of days leav will b taken... please help me sort this out.. i have tried this

protected void BtnApply_Click(object sender, EventArgs e) { MTMSDTO objc = new MTMSDTO(); int Flag = 0; LblLogdInUser.Text = Session["EmpName"].ToString(); objc.LoggedInUser = LblLogdInUser.Text; objc.TypeofLeave = DrpTypeofLeave.SelectedItem.Text; string date; date = Convert.ToDateTime(TxtBeginDate.Text).ToString("dd/MM/yyyy"); DateTime dt = new DateTime(); dt = Convert.ToDateTime(date); objc.BeginDate = dt; objc.EndDate = Convert.ToDateTime(TxtEndDate.Text); objc.Description = TxtDescription.Text; objc.NumofDays = Convert.ToInt32(TxtNumofDays.Text); //objc.EmpName = LblLogdInUser.Text; int X = obj.InsertLeave(objc); { if (X >= 0) { Flag = 1; } else { Flag = 0; } } if (Flag == 1) { LblSuccess.Visible = true; LblSuccess.Text = "Data Added Successfully"; DrpTypeofLeave.ClearSelection(); TxtBeginDate.Text = ""; TxtEndDate.Text = ""; TxtDescription.Text = ""; TxtNumofDays.Text = ""; } else { LblErr.Visible = true; LblErr.Text = "Failed To Add Data!!!"; } } protected void TxtNumofDays_TextChanged1(object sender, EventArgs e) { MTMSDTO objc = new MTMSDTO(); objc.NumofDays = Convert.ToInt32(TxtNumofDays.Text); TxtNumofDays.Focus(); } protected void TxtEndDate_TextChanged(object sender, EventArgs e) { DateTime BeginDate = Convert.ToDateTime(TxtBeginDate.Text); DateTime EndDate = Convert.ToDateTime(TxtEndDate.Text); TimeSpan diff = EndDate.Subtract(BeginDate); TxtNumofDays.Text = diff.Days.ToString(); }

im getting number of days value in my database but its not showing in the textbox and cursor is not pointing too to the textbox of numberof days wen i run d prjct..

解决方案

If your textbox is wrapped in some update panel then make sure panel is getting updated after postback