如何删除横切表中的行而无需将页面发布到C#中的服务器? [英] how to delete row from transection table without posting page to the server in C#?
本文介绍了如何删除横切表中的行而无需将页面发布到C#中的服务器?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如何在不将页面发布到C#中的服务器的情况下从事务表中删除行?
How to delete row from transaction table without posting page to the server in C#?
//this is a sales.aspx file:
<asp:GridView ID="gvproductinfo" runat="server">
<Columns>
<asp:TemplateField HeaderText="Cancel">
<ItemTemplate>
<asp:CheckBox ID="chk1" runat="server"/>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Quantity">
<ItemTemplate>
<asp:TextBox ID="txtquantity" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Price">
<ItemTemplate>
<asp:TextBox ID="txtprice" runat="server"></asp:TextBox>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Commitement Date">
<ItemTemplate>
<asp:TextBox ID="txtcommitementdate" runat="server" style="margin-top: 0px"></asp:TextBox>
<asp:CalendarExtender ID="CalendarExtender1" runat="server"
PopupButtonID="txtcommitementdate" TargetControlID="txtcommitementdate"
Format="MM/dd/yyyy">
</asp:CalendarExtender>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
//this is a sales.aspx.cs
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml.Linq;
using System.Collections.Generic;
using System.Data.SqlClient;
public partial class salesordertrancation : System.Web.UI.Page
{
DataTable dt;
SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["connectionstring"].ConnectionString);
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
loaddatatogrid();
}
dt = new DataTable("MyTable");
dt.Columns.Add("ProductCode");
dt.Columns.Add("ProductName");
}
protected void loaddatatogrid()
{
if (cn.State == ConnectionState.Closed)
cn.Open();
SqlCommand cm = new SqlCommand("select CustomerCode,CustomerName from customer ", cn);
SqlDataReader dr = cm.ExecuteReader();
gvcustomer.DataSource = dr;
gvcustomer.DataBind();
cn.Close();
}
protected void gvcustomer_SelectedIndexChanged(object sender, EventArgs e)
{
GridViewRow row = gvcustomer.SelectedRow;
txtcustomercode.Text = row.Cells[1].Text;
txtcustomername.Text = row.Cells[2].Text;
}
protected void databound()
{
if (cn.State == ConnectionState.Closed)
cn.Open();
SqlCommand cm = new SqlCommand("select ProductCode,ProductName from product ", cn);
SqlDataReader dr = cm.ExecuteReader();
if (dr.HasRows)
{
gvproduct.DataSource = dr;
gvproduct.DataBind();
}
dr.Close();
cn.Close();
}
protected void btnshowproducts_Click(object sender, EventArgs e)
{
databound();
btnadd.Visible = true;
}
protected void btnAddproducts_Click1(object sender, EventArgs e)
{
SqlTransaction trans = null;
try
{
if (cn.State == ConnectionState.Closed)
cn.Open();
trans = cn.BeginTransaction();
int cnt;
SqlCommand cm = new SqlCommand("select max(SalesOrderCode) from salesorder", cn);
cm.Transaction = trans;
if (cm.ExecuteScalar().ToString() == "")
{
cnt = 1;
}
else
{
cnt = (int)cm.ExecuteScalar();
cnt = cnt + 1;
}
cm = new SqlCommand("insert into salesorder values(@p1,@p2,@p3,@p4) ", cn);
cm.Transaction = trans;
cm.Parameters.Add("@p1", SqlDbType.Int).Value = cnt;
cm.Parameters.Add("@p2", SqlDbType.DateTime).Value = Convert.ToDateTime(txtdate.Text);
cm.Parameters.Add("@p3", SqlDbType.Int).Value = Convert.ToInt16(txtcustomercode.Text);
cm.Parameters.Add("@p4", SqlDbType.VarChar).Value = txtremarks.Text;
cm.ExecuteNonQuery();
for (int i = 0; i < gvproductinfo.Rows.Count; i++)
{
GridViewRow row = gvproductinfo.Rows[i];
TextBox t1 = (TextBox)row.FindControl("txtquantity");
TextBox t2 = (TextBox)row.FindControl("txtprice");
TextBox t3 = (TextBox)row.FindControl("txtcommitementdate");
cm = new SqlCommand("insert into salesordertran(SalesOrderCode,ProductCode,SalesOrderTranQty,SalesOrderTranPrice,SalesOrderCommDate) values(@p1,@p2,@p3,@p4,@p5)", cn);
cm.Transaction = trans;
cm.Parameters.Add("@p1", SqlDbType.Int).Value = cnt;
cm.Parameters.Add("@p2", SqlDbType.Int).Value = Convert.ToInt16(gvproduct.Rows[i].Cells[1].Text);
cm.Parameters.Add("@p3", SqlDbType.Int).Value = Convert.ToInt16(t1.Text);
cm.Parameters.Add("@p4", SqlDbType.Int).Value = Convert.ToInt16(t2.Text);
cm.Parameters.Add("@p5", SqlDbType.DateTime).Value = Convert.ToDateTime(t3.Text);
//cm2.Parameters.Add("@p6", SqlDbType.Bit).Value = Convert.ToBoolean(gvproduct.Rows[j].Cells[7].Text);
//cm2.Parameters.Add("@p7", SqlDbType.DateTime).Value = Convert.ToDateTime(gvproduct.Rows[j].Cells[5].Text);
//cm2.Parameters.Add("@p8", SqlDbType.Bit).Value = Convert.ToBoolean(gvproduct.Rows[j].Cells[6].Text);
//cm2.Parameters.Add("@p9", SqlDbType.DateTime).Value = Convert.ToDateTime(gvproduct.Rows[j].Cells[7].Text);
cm.ExecuteNonQuery();
}
trans.Commit();
Label1.Text = "Order is Placed Successfully!!!!!!";
ClientScript.RegisterStartupScript(this.GetType(), "Msg", "alert('Production process completed!!');", true);
cn.Close();
}
catch (Exception ex)
{
Response.Write(ex);
trans.Rollback();
cn.Close();
}
}
protected void btnadd_Click(object sender, EventArgs e)
{
try
{
for (int i = 0; i < gvproduct.Rows.Count; i++)
{
GridViewRow row = gvproduct.Rows[i];
CheckBox c1 = (CheckBox)row.FindControl("chk");
if (c1.Checked == true)
{
DataRow drow = dt.NewRow();
drow["ProductCode"] = row.Cells[1].Text;
drow["ProductName"] = row.Cells[2].Text;
dt.Rows.Add(drow);
gvproductinfo.DataSource = dt;
gvproductinfo.DataBind();
}
}
btnAddproducts.Visible = true;
}
catch (Exception ex)
{
Response.Write(ex);
}
}
}
现在我的问题是:
如果错误，我会在产品gridview中选择一个产品.
然后点击添加按钮.
所以我在productinfo gridview中有一个产品信息.
但是现在我想从productinfo gridview删除行.
在删除警报框之前，必须先弹出它.
因此，我该怎么办?
Now my problem is:
if by mistake, I select a product in product gridview.
And then clik on add button.
So I hav a product information in productinfo gridview.
But now i want to delete row from productinfo gridview.
And before deletion the alertbox has to b pop up.
So what should I do?
推荐答案
有很多方法可以完成此操作.看看下面的代码项目文章，了解如何使用Javascript中的WCF.
在JavaScript中使用WCF服务的入门指南使用ASP.NET AJAX [ ^ ]
选项2:将ASP.Net MVC与删除操作配合使用.
选项3:如果您不想使用WCF或MVC，以下文章是更好的选择之一
使用HTTP处理程序和jQuery在ASP.NET Web应用程序中进行CRUD操作 [ ^ ]
There are many ways to accomplish this. Take a look at the following code project article, for using WCF from Javascript.
A beginner’s guide for consuming a WCF service in JavaScript using ASP.NET AJAX[^]
Option 2: would be to use ASP.Net MVC with delete action.
Option 3: If you dont want to use WCF or MVC, following article is one of the better options
CRUD Operation in ASP.NET Web Applications Using HTTP Handler and jQuery[^]
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