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  • 移除GridView中的重复项

    1. The HTML Markup

      <div>
                <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false" HeaderStyle-BackColor="#3AC0F2" HeaderStyle-ForeColor="White">
                    <Columns>
                        <asp:BoundField DataField="Id" HeaderText="Id" ItemStyle-Width="30" />
                        <asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
                        <asp:BoundField DataField="City" HeaderText="City" ItemStyle-Width="150" />
                    </Columns>
                </asp:GridView>
                <br />
                <asp:Button ID="btnRemove" runat="server" Text="Remove Duplicates" OnClick="btnRemove_Click" />
            </div>
    

     2. 绑定GridView的方法

     public void BindGridview()
            {
                DataTable dt = new DataTable();
                dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id"), new DataColumn("Name"), new DataColumn("City") });
                dt.Rows.Add(1, "John Hammond", "United States");
                dt.Rows.Add(1, "John Hammond", "United States");
                dt.Rows.Add(2, "Mudassar Khan", "India");
                dt.Rows.Add(2, "Mudassar Khan", "India");
                dt.Rows.Add(3, "Suzanne Mathews", "France");
                dt.Rows.Add(3, "Suzanne Mathews", "France");
                dt.Rows.Add(3, "Suzanne Mathews", "France");
                dt.Rows.Add(4, "Robert Schidner", "Russia");
                dt.Rows.Add(4, "Robert Schidner", "Russia");
                dt.Rows.Add(4, "Robert Schidner", "Russia");
                dt.Rows.Add(4, "Robert Schidner", "Russia");
    
                ViewState["dt"] = dt;
                GridView1.DataSource = dt;
                GridView1.DataBind();
            }
           
    

     3. 移除重复项的方法

     public void RemoveDuplicateReords()
            {
                DataTable dt = (DataTable)ViewState["dt"];
                dt = dt.DefaultView.ToTable(true, "Id", "Name", "City");
                GridView1.DataSource = dt;
                GridView1.DataBind();
            }
    

     更多的详细信息,请访问下面的链接

    http://www.aspsnippets.com/Articles/Remove-Delete-Duplicate-Rows-Records-from-DataTable-using-C-and-VBNet.aspx

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  • 原文地址:https://www.cnblogs.com/songxia/p/4270812.html
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