如何从一个索引中删除数据表中的数据并插入到另一个索引中 [英] how to remove data from data table from one index and insert into another..

问题描述

如何从一个索引中删除数据表中的数据并插入到另一个索引中。



我有三个字段，我绑定到数据表



in_website_id website_name login_name



5 vvv ggg

6 vvv ggg

1 vvv ggg

2 vvv ggg

8 vvv ggg





在这个数据表中我想从第3行中删除in_website_id（1,2）的数据并插入到第1行和第2行..



如何做到这一点plzzz帮助？

how to remove data from data table from one index and insert into another.

I have three field which i am binding to datatable

in_website_id website_name login_name

5 vvv ggg
6 vvv ggg
1 vvv ggg
2 vvv ggg
8 vvv ggg


inthis datatable i want to remove data of in_website_id (1,2) from 3rd row and insert into 1 and 2nd row..

How to do this plzzz help ??

推荐答案

using System.Collections.Generic;
using System.Data;
using System.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create test table
            DataTable dt = CreateTestTable("TestTable");

            // Cast to IEnumerable and sort
            IEnumerable<datarow> dataRows = dt.Rows.Cast<datarow>();
            var sortedRows = from DataRow r in dataRows
                       orderby r["in_website_id"]
                       select r;

            // Put back in
            dt = sortedRows.CopyToDataTable();
        }

        private static DataTable CreateTestTable(string tableName)
        {
            // Create a test DataTable with two columns and a few rows.
            DataTable table = new DataTable(tableName);

            DataColumn column = new DataColumn("in_website_id", typeof(System.Int32));
            table.Columns.Add(column);
            
            column = new DataColumn("website_name", typeof(System.String));
            table.Columns.Add(column);

            column = new DataColumn("login_name", typeof(System.String));
            table.Columns.Add(column);

            // rows.
            DataRow row1 = table.NewRow();
            row1["in_website_id"] = 5;
            row1["website_name"] = "vvv";
            row1["login_name"] = "ggg";
            table.Rows.Add(row1);

            DataRow row2 = table.NewRow();
            row2["in_website_id"] = 6;
            row2["website_name"] = "vvv";
            row2["login_name"] = "ggg";
            table.Rows.Add(row2);

            DataRow row3 = table.NewRow();
            row3["in_website_id"] = 1;
            row3["website_name"] = "vvv";
            row3["login_name"] = "ggg";
            table.Rows.Add(row3);

            DataRow row4 = table.NewRow();
            row4["in_website_id"] = 2;
            row4["website_name"] = "vvv";
            row4["login_name"] = "ggg";
            table.Rows.Add(row4);

            DataRow row5 = table.NewRow();
            row5["in_website_id"] = 8;
            row5["website_name"] = "vvv";
            row5["login_name"] = "ggg";
            table.Rows.Add(row5);

            table.AcceptChanges();
            return table;
        }
    }
}

Got the solution...Its working..
 
if (dtWebsite.Rows.Count > 0)
{
DataRow[] drWebsite = dtWebsite.Select("in_website_id in (1,604)");
int iRowIndex = 0;
foreach (DataRow drWebsite1 in drWebsite)
{
DataRow drWebsite2 = dtWebsite.NewRow();
drWebsite2.ItemArray = drWebsite[iRowIndex].ItemArray;
dtWebsite.Rows.Remove(drWebsite[iRowIndex]);
dtWebsite.Rows.InsertAt(drWebsite2, 0);
iRowIndex ++;
}
ddlWebsite.DataSource = dtWebsite;
ddlWebsite.DataTextField = "vc_website_name";
ddlWebsite.DataValueField = "in_website_id";
ddlWebsite.DataBind();
ddlWebsite.Items.Insert(0, new ListItem("Select Website", "0"));

这个答案stackoverflow讨论一个问题与您的问题非常相似： http：// stackoverflow .com / questions / 3150216 / data-table-delete-a-row-in-c-sharp-using-loop [ ^ ]

This answer stackoverflow discusses a problem very much similar to your problem: http://stackoverflow.com/questions/3150216/data-table-delete-a-row-in-c-sharp-using-loop[^]

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