我已经完成了使用数据集填充网格视图的代码。 看看：
public void FillGrid(string StartAlpha, string CommandName, string ColumnName, string SearchText)
{
using (DataClassesDataContext db = new DataClassesDataContext())
{
int userid = db.Users.Where(u => u.EmailAddress.Equals((String)Session["EmailID"])).Select(u => u.Id).SingleOrDefault();
var sms = Enumerable.Repeat(new
{
Id = default(int),
Title = string.Empty,
Body = string.Empty,
FromUser = string.Empty,
ToUser = string.Empty,
SentDateTime = default(DateTime?),
IsMedia = default(bool),
CreatedDate = default(DateTime),
}, 1).ToList();
DataSet myDataSet = new DataSet();
DataTable dt = new DataTable();
dt.Columns.Add(new DataColumn("Id", typeof(string)));
dt.Columns.Add(new DataColumn("Title", typeof(string)));
dt.Columns.Add(new DataColumn("Body", typeof(string)));
dt.Columns.Add(new DataColumn("FromUser", typeof(string)));
dt.Columns.Add(new DataColumn("ToUser", typeof(string)));
dt.Columns.Add(new DataColumn("SentDateTime", typeof(DateTime)));
dt.Columns.Add(new DataColumn("IsMedia", typeof(bool)));
dt.Columns.Add(new DataColumn("CreatedDate", typeof(DateTime)));
if (StartAlpha.Equals("All"))
{
switch (CommandName)
{
case "Inbox":
break;
case "Outbox":
lbl_countall.Text = db.SMS.Where(s => s.SentDateTime != null).Count().ToString();
lbut_showinbox.Font.Bold = false;
lbut_showoutbox.Font.Bold = true;
lbut_showdraffs.Font.Bold = false;
sms = db.SMS.OrderByDescending(s => s.SentDateTime).Where(s => (s.SentDateTime != null || s.IsDraft.Equals(false)) & s.user_id.Equals(userid)).Select(s => new
{
Id = s.Id,
Title = s.Title,
Body = s.Body,
FromUser = db.SMSAccounts.Where(a=>a.user_id.Equals(userid)).Select(a=>a.FromMobileNo).FirstOrDefault(),
ToUser = s.To_MobileNo,
SentDateTime = s.SentDateTime,
IsMedia = false,
CreatedDate = s.CreatedDate
}).FilterForColumn(ColumnName, SearchText).ToList();
foreach (var item in sms)
{
if (item != null)
{
DataRow dr = dt.NewRow();
dr["Id"] = item.Id.ToString();
dr["Title"] = item.Title.ToString();
dr["Body"] = Regex.Replace(item.Body.ToString().Trim(), @"<(.|\n)*?>", string.Empty);
dr["FromUser"] = item.FromUser.ToString();
if (item.ToUser != null)
{
dr["ToUser"] = item.ToUser.ToString();
}
else
{
dr["ToUser"] = "NoN";
}
if (item.SentDateTime != null)
{
dr["SentDatetTime"] = item.SentDateTime;
}
else
{
dr["SentDatetTime"] = DBNull.Value;
}
dr["IsMedia"] = item.IsMedia;
dr["CreatedDate"] = item.CreatedDate;
dt.Rows.Add(dr);
}
}
break;
case "Drafts":
lbl_countall.Text = db.SMS.Where(s => s.SentDateTime != null || s.IsDraft.Equals(true)).Count().ToString();
lbut_showinbox.Font.Bold = false;
lbut_showoutbox.Font.Bold = false;
lbut_showdraffs.Font.Bold = true;
sms = db.SMS.OrderByDescending(s => s.SentDateTime).Where(s => (s.SentDateTime == null || s.IsDraft.Equals(true)) & s.user_id.Equals(userid)).Select(s => new
{
Id = s.Id,
Title = s.Title,
Body = s.Body,
FromUser = db.SMSAccounts.Where(a => a.user_id.Equals(userid)).Select(a => a.FromMobileNo).FirstOrDefault(),
ToUser = s.To_MobileNo,
SentDateTime = s.SentDateTime,
IsMedia = false,
CreatedDate = s.CreatedDate
}).FilterForColumn(ColumnName, SearchText).ToList();
foreach (var item in sms)
{
if (item != null)
{
DataRow dr = dt.NewRow();
dr["Id"] = item.Id.ToString();
dr["Title"] = item.Title.ToString();
dr["Body"] = Regex.Replace(item.Body.ToString().Trim(), @"<(.|\n)*?>", string.Empty);
dr["FromUser"] = item.FromUser.ToString();
if (item.ToUser != null)
{
dr["ToUser"] = item.ToUser.ToString();
}
else
{
dr["ToUser"] = "NoN";
}
if (item.SentDateTime != null)
{
dr["SentDatetTime"] = item.SentDateTime;
}
else
{
dr["SentDatetTime"] = DBNull.Value;
}
dr["IsMedia"] = item.IsMedia;
dr["CreatedDate"] = item.CreatedDate;
dt.Rows.Add(dr);
}
}
break;
}
}
else
{
switch (CommandName)
{
//case "Inbox":
.............
// break;
case "Outbox":
lbl_countall.Text = db.SMS.Where(s => s.SentDateTime != null).Count().ToString();
lbut_showinbox.Font.Bold = false;
lbut_showoutbox.Font.Bold = true;
lbut_showdraffs.Font.Bold = false;
sms = db.SMS.OrderByDescending(s => s.SentDateTime).Where(s => (s.SentDateTime != null || s.IsDraft.Equals(false)) & s.user_id.Equals(userid)).Select(s => new
{
Id = s.Id,
Title = s.Title,
Body = s.Body,
FromUser = db.SMSAccounts.Where(a => a.user_id.Equals(userid)).Select(a => a.FromMobileNo).FirstOrDefault(),
ToUser = s.To_MobileNo,
SentDateTime = s.SentDateTime,
IsMedia = false,
CreatedDate = s.CreatedDate
}).FilterForColumn(ColumnName, SearchText).ToList().Where(x => x.Title.StartsWith(StartAlpha, StringComparison.CurrentCultureIgnoreCase)).ToList();
foreach (var item in sms)
{
if (item != null)
{
DataRow dr = dt.NewRow();
dr["Id"] = item.Id.ToString();
dr["Title"] = item.Title.ToString();
dr["Body"] = Regex.Replace(item.Body.ToString().Trim(), @"<(.|\n)*?>", string.Empty);
dr["FromUser"] = item.FromUser.ToString();
if (item.ToUser != null)
{
dr["ToUser"] = item.ToUser.ToString();
}
else
{
dr["ToUser"] = "NoN";
}
if (item.SentDateTime != null)
{
dr["SentDatetTime"] = item.SentDateTime;
}
else
{
dr["SentDatetTime"] = DBNull.Value;
}
dr["IsMedia"] = item.IsMedia;
dr["CreatedDate"] = item.CreatedDate;
dt.Rows.Add(dr);
}
}
break;
case "Drafts":
lbl_countall.Text = db.SMS.Where(s => s.SentDateTime != null).Count().ToString();
lbut_showinbox.Font.Bold = false;
lbut_showoutbox.Font.Bold = false;
lbut_showdraffs.Font.Bold = true;
sms = db.SMS.OrderByDescending(s => s.SentDateTime).Where(s => (s.SentDateTime == null || s.IsDraft.Equals(true)) & s.user_id.Equals(userid)).Select(s => new
{
Id = s.Id,
Title = s.Title,
Body = s.Body,
FromUser = db.SMSAccounts.Where(a => a.user_id.Equals(userid)).Select(a => a.FromMobileNo).FirstOrDefault(),
ToUser = s.To_MobileNo,
SentDateTime = s.SentDateTime,
IsMedia = false,
CreatedDate = s.CreatedDate
}).FilterForColumn(ColumnName, SearchText).ToList().Where(x => x.Title.StartsWith(StartAlpha, StringComparison.CurrentCultureIgnoreCase)).ToList();
foreach (var item in sms)
{
if (item != null)
{
DataRow dr = dt.NewRow();
dr["Id"] = item.Id.ToString();
dr["Title"] = item.Title.ToString();
dr["Body"] = Regex.Replace(item.Body.ToString().Trim(), @"<(.|\n)*?>", string.Empty);
dr["FromUser"] = item.FromUser.ToString();
if (item.ToUser != null)
{
dr["ToUser"] = item.ToUser.ToString();
}
else
{
dr["ToUser"] = "NoN";
}
if (item.SentDateTime != null)
{
dr["SentDatetTime"] = item.SentDateTime;
}
else
{
dr["SentDatetTime"] = DBNull.Value;
}
dr["IsMedia"] = item.IsMedia;
dr["CreatedDate"] = item.CreatedDate;
dt.Rows.Add(dr);
}
}
break;
}
}
myDataSet.Tables.Add(dt);
if (myDataSet.Tables[0].Rows.Count > 0)
{
DataView myDataView = new DataView();
myDataView = myDataSet.Tables[0].DefaultView;
if (this.ViewState["SortExp"] != null)
{
myDataView.Sort = this.ViewState["SortExp"].ToString()
+ " " + this.ViewState["SortOrder"].ToString();
}
GV_ViewSMS.DataSource = myDataView;
}
if (GV_ViewSMS.Rows.Count != 0)
{
SetPageNumbers();
}
GV_ViewSMS.DataBind();
}
}
并发生此错误：
'/'应用程序中的服务器错误。 列'SentDatetTime'不属于表。 描述：执行当前Web请求期间发生未处理的异常。请查看堆栈跟踪，以获取有关错误及其在代码中的起源位置的更多信息。异常详细信息：System.ArgumentException：列'SentDatetTime'不属于表。
Source Error:
Line 439: else
Line 440: {
Line 441: dr["SentDatetTime"] = DBNull.Value;
Line 442: }
Line 443: dr["IsMedia"] = item.IsMedia;
Source File: e:\EASYMAIL_off\EASYMAIL\BulkSMS.aspx.cs Line: 441
堆栈追踪：
[ArgumentException: Column 'SentDatetTime' does not belong to table .]
System.Data.DataRow.GetDataColumn(String columnName) +5731291
System.Data.DataRow.set_Item(String columnName, Object value) +13
BulkSMS.FillGrid(String StartAlpha, String CommandName, String ColumnName, String SearchText) in e:\EASYMAIL_off\EASYMAIL\BulkSMS.aspx.cs:441
BulkSMS.Page_Load(Object sender, EventArgs e) in e:\EASYMAIL_off\EASYMAIL\BulkSMS.aspx.cs:40
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
System.Web.UI.Control.OnLoad(EventArgs e) +95
System.Web.UI.Control.LoadRecursive() +59
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +678
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.6.1055.0
我的代码有什么问题?????
请帮助我解决这个问题.....
答案 0 :(得分：1)
您的拼写错误SentDatetTime - ＆gt; SentDateTime：
if (item.SentDateTime != null)
{
dr["SentDateTime"] = item.SentDateTime;
}
else
{
dr["SentDateTime"] = DBNull.Value;
}