如何使用日期时间数据类型按列对数据表进行排序 [英] How to sort datatable by column with datetime datatype

问题描述

我所做的如下

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

以下是应用排序之前数据表数据的屏幕截图

Here is a screen shot of data of data table before applying a sorting

但是在使用上述代码后，我也无法通过使用 TransactionDate对数据进行排序

But also after using above code i am not able to sort data by using "TransactionDate"

编辑

在这里，我显示了我如何准备此数据表

Here i shown that how i am preparing this datatable

 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;

推荐答案

为了让我的代码识别DataTable值作为DateTime，创建时必须设置行的数据类型。 （我曾将此DataTable用作GridView的数据源，并且很难对其进行排序。）

In order to get my code to recognize a DataTable value as a DateTime I had to set the data type of my row when I created it. (I was using this DataTable as a DataSource for my GridView and was having difficulties getting it to sort on it.)

以前我有

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

我将其更改为

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

将我插入该列的类型更改为DateTime直到我设置了列类型都没有用。

Changing the type I was inserting into that column to a DateTime did not work until I set the column type.

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

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