Как связать данные в табличном виде

Question

<%@ Page Title="" Language="C#" MasterPageFile="~/firstpage.master" AutoEventWireup="true" 
    CodeFile="MasterCodes.aspx.cs" Inherits="MasterCodes" %> 

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %> 
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server"> 
</asp:Content> 
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server"> 
    <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true" LoadScriptsBeforeUI="false" 
     EnablePartialRendering="false"> 
    </asp:ScriptManager> 
    <div class="contentarea"> 
     <br /> 
     <asp:Label ID="lblsub" Style="overflow-x: auto; margin-left: 20px;" runat="server" Text="Station master data entry" /> 
    </div> 
    <div style="overflow: auto; padding: 10px 20px;"> 
     <br /> 
     <asp:Label ID="lblcontractnumber" runat="server" Text="Station Code" Font-Names="Calibri"></asp:Label> 
     <asp:TextBox ID="txtcontractnumber" runat="server"></asp:TextBox> 
    </div> 
    <div style="overflow: auto; padding: 10px 20px;"> 
     <asp:Label ID="Label2" runat="server" Text="Station Name: " Font-Names="Calibri"></asp:Label> 
     <asp:Label ID="Label3" runat="server" Text="3A1-Elevated" Font-Names="Calibri"></asp:Label> 
    </div> 
    <div style="overflow: auto; padding: 10px 20px;"> 
     <asp:GridView ID="grd_mastercodes" runat="server" HeaderStyle-BackColor="#f79646" HeaderStyle-ForeColor="White" 
      HeaderStyle-Font-Bold="false" Font-Names="Calibri" 
      Font-Size="Medium" RowStyle-BackColor="White" HeaderStyle-BorderColor="Black" 
      AutoGenerateColumns="False" RowStyle-BorderColor="Black" OnRowCreated="grd_mastercodes_RowCreated"> 
     </asp:GridView> 
    </div> 
</asp:Content> 

код Behind:

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Data; 
using System.Drawing; 
using System.Data.SqlClient; 
using System.Configuration; 
using AjaxControlToolkit; 


public partial class MasterCodes : System.Web.UI.Page 
{ 
    bool rowset = false; 
    GridView dgv = new GridView(); 
    // For First gridview 
    String[] gridColumnNames_mastercodes = { "S.NO", "WBE Codes", "BOQ ID", "Description", "Unit", "Budgeted Quantity", "Variation Quantity", "Revised Quantity" }; 
    String[] gridColumnwidth_mastercodes = { "50px", "200px", "200px", "350px", "100px", "100px", "100px", "100px" }; 
    int[] gridColumnWidth_mastercodes = { 3, 15, 15, 45, 10, 10, 10, 10 }; 

    protected void Page_Load(object sender, EventArgs e) 
    { 
     try 
     { 
      if (!IsPostBack) 
      { 
       // For First gridview 
       DataTable dt = new DataTable(); 
       for (int c = 0; c < gridColumnNames_mastercodes.Length; c++) 
       { 
        DataColumn dcol = new DataColumn(c.ToString(), typeof(System.Int32)); 
        dcol.ColumnName = gridColumnNames_mastercodes[c]; 
        dt.Columns.Add(dcol); 

        TemplateField tf = new TemplateField(); 
        tf.HeaderStyle.Font.Bold = false; 
        tf.HeaderText = gridColumnNames_mastercodes[c]; 
        tf.HeaderStyle.Width = new Unit(gridColumnwidth_mastercodes[c]); 
        grd_mastercodes.Columns.Add(tf); 
       } 
       for (int i = 0; i < 15; i++) 
       { 
        dt.Rows.Add(dt.NewRow()); 
       } 
       grd_mastercodes.DataSource = dt; 
       grd_mastercodes.DataBind(); 
      } 
     } 
     catch (Exception ex) 
     { 
      string msg = ex.Message.ToString(); 
      System.Web.UI.ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "AlertBox", "alert('" + msg + "');", true); 
     } 
    } 

    //For First Gridview 
    protected void grd_mastercodes_RowCreated(object sender, GridViewRowEventArgs e) 
    { 
     try 
     { 
      if (e.Row.RowType == DataControlRowType.DataRow) 
      { 
       for (int rc = 0; rc < grd_mastercodes.Columns.Count; rc++) 
       { 
        TextBox txtBox = new TextBox(); 
        txtBox.ID = "Excel_mastercodes" + e.Row.RowIndex + "_" + rc; 
        txtBox.MaxLength = gridColumnWidth_mastercodes[rc]; 
        txtBox.Width = new Unit(gridColumnwidth_mastercodes[rc]); 
        txtBox.BorderStyle = BorderStyle.None; 
        e.Row.Cells[rc].Controls.Add(txtBox); 
        e.Row.Cells[rc].Attributes.Add("onKeyDown", "enter(this);"); 
        if (rc == 3) 
         txtBox.Style["text-align"] = "left"; 
        else 
         txtBox.Style["text-align"] = "center"; 
       } 
      } 
     } 
     catch (Exception ex) 
     { 
      string msg = ex.Message.ToString(); 
      System.Web.UI.ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "AlertBox", "alert('" + msg + "');", true); 
     } 
    } 
} 

Мне нужно получить данные из БД SQL. Я знаю, что все-таки я не подключаюсь к db, но я борюсь за то, где писать код sql в приведенном выше коде для извлечения данных. Если кто-то знает, пожалуйста, помогите мне. Танки

Answer 1

У меня есть образец данных для связывания GridView, можно настроить соответственно

ASPX КОД

<asp:GridView ID="grdhospital" 
      runat="server" 
      AutoGenerateColumns="false" 
      Width="100%" 
      border="1" 
      AllowPaging="true" 
      OnPreRender="PreRenderGrid" 
      PageSize="2" 
      OnDataBound="grdhospital_DataBound" 
      OnPageIndexChanging="grdhospital_PageIndexChanging" 
      Style="border: 1px solid #E5E5E5;" 
      CellPadding="3" 
      CssClass="hoverTable" 
      DataKeyNames="Id" 
      OnRowCommand="grdhospital_RowCommand" 
      OnRowDeleting="grdhospital_RowDeleting" 
      EmptyDataText="No records found" 
      ShowFooter="false" 
      HeaderStyle-CssClass="k-grid td" 
      EnableSortingAndPagingCallbacks="false"> 
      <AlternatingRowStyle CssClass="k-alt" /> 
      <Columns> 
       <asp:TemplateField HeaderText="Select" ItemStyle-Width="5"> 
        <ItemTemplate> 
         <asp:CheckBox ID="chkDelete" runat="server" onClick="Check_Click(this)" /> 
        </ItemTemplate> 
       </asp:TemplateField> 
       <asp:BoundField DataField="hospital_name" HeaderText="Hospital Name" ItemStyle-Width="30" /> 
       <asp:BoundField DataField="description" HeaderText="Description" ItemStyle-Width="30" /> 
       <asp:BoundField DataField="active" HeaderText="Active" ItemStyle-Width="30" /> 
       <asp:TemplateField HeaderText="Action" HeaderStyle-Width="5%"> 
        <ItemTemplate> 
         <asp:ImageButton ID="btnEdit" AlternateText="Edit" ImageUrl="~/images/edit.png" runat="server" Width="15" Height="15" CommandName="eEdit" CommandArgument='<%# Eval("Id") %>' CausesValidation="false" /> 
         <asp:ImageButton ID="btnDelete" AlternateText="Delete" ImageUrl="~/images/delete.png" runat="server" Width="15" Height="15" CommandName="Delete" CommandArgument='<%# Eval("Id") %>' CausesValidation="false" OnClientClick="return confirm('Are you sure you want to delete this record?')" /> 
        </ItemTemplate> 
       </asp:TemplateField> 
      </Columns> 
     </asp:GridView> 

CS DataBindCode: -

Сначала нужно написать BindGrid() метод, как ниже

public void BindGrid() 
    { 
     string conString = ConfigurationManager.ConnectionStrings["YourConnectionString"].ConnectionString; 
     SqlCommand cmd = new SqlCommand("Select * from yourtablename"); 
     using (SqlConnection con = new SqlConnection(conString)) 
     { 
      using (SqlDataAdapter sda = new SqlDataAdapter()) 
      { 
       cmd.Connection = con; 
       sda.SelectCommand = cmd; 
       using (DataTable dt = new DataTable()) 
       { 
        sda.Fill(dt); 
        grdhospital.DataSource = dt; 
        grdhospital.DataBind(); 
       } 
      } 
     } 
    } 

Тогда нам нужно вызвать вышеупомянутый метод на Page_load

protected void Page_Load(object sender, EventArgs e) 
    { 
     if (!IsPostBack) 
     { 
      BindGrid(); 
     } 
    } 

Надеется, что это помогает.