如何使用日期時間數據類型按列對數據表進行排序

Question

我所做的如下

dtClaim.DefaultView.Sort = "TransactionDate asc";
dtClaim = dtClaim.DefaultView.ToTable();
ViewState["dtClaim"] = dtClaim;

這是應用排序之前數據表中數據的屏幕截圖

但是在使用上述代碼后，我也無法使用“ TransactionDate”對數據進行排序

編輯

在這里，我展示了我如何准備此數據表

 DataTable dtClaim = new DataTable();
 dtClaim = (DataTable)ViewState["dtClaim"];

 DataRow drClaim = dtClaim.NewRow();
 drClaim["ClaimId"] = count + 1;
 drClaim["TextileClaimApplicationId"] = ViewState["TextileClaimApplicationId"].ToString();
 drClaim["BankId"] = ViewState["TextileClaimApplicationId"].ToString();
 drClaim["BankName"] = ViewState["TextileClaimApplicationId"].ToString();
 drClaim["SectorId"] = ViewState["TextileClaimApplicationId"].ToString();
 drClaim["IsDisbursment"] = rblIsDisbursment.SelectedValue;
 drClaim["TransactionDate"] = txtDisbursementDate.Text == "" ? Convert.ToDateTime(txtRepaymentDate.Text, System.Globalization.CultureInfo.GetCultureInfo("en-GB").DateTimeFormat) : Convert.ToDateTime(txtDisbursementDate.Text, System.Globalization.CultureInfo.GetCultureInfo("en-GB").DateTimeFormat);
 drClaim["DisbursementAmount"] = txtDisbursementAmount.Text == "" ? Convert.ToDecimal("0") : Convert.ToDecimal(txtDisbursementAmount.Text);
 drClaim["RepaymentPrincipleAmount"] = txtRepaymentPrincipleAmount.Text == "" ? Convert.ToDecimal("0") : Convert.ToDecimal(txtRepaymentPrincipleAmount.Text);
 drClaim["RepaymentOtherAmount"] = txtRepaymentOtherAmount.Text == "" ? Convert.ToDecimal("0") : Convert.ToDecimal(txtRepaymentOtherAmount.Text);
 dtClaim.Rows.Add(drClaim);



dtClaim.DefaultView.Sort = "TransactionDate";
dtClaim = dtClaim.DefaultView.ToTable();
ViewState["dtClaim"] = dtClaim;

Answer 1

為了使我的代碼將DataTable值識別為DateTime，我必須在創建行時設置其數據類型。 （我將這個DataTable用作GridView的數據源，並且很難對其進行排序。）

以前我有

DataTable dt = new DataTable();
dt.Columns.Add("ID");
dt.Columns.Add("StartDate");

我將其更改為

dt.Columns.Add("StartDate", typeof(DateTime));

在設置列類型之前，無法將要插入該列的類型更改為DateTime。

https://msdn.microsoft.com/en-us/library/hfx3s9wd(v=vs.110).aspx