请检查复选框后检查复选框是否在Gridview中更新相应的行。这是我的完整源代码。请帮助我在更新按钮点击后检查Gridview中的复选框。我遇到的情景是为了识别哪个用户的数据会更新。请帮助我的朋友。
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AllowSorting="True" AutoGenerateColumns="False" DataKeyNames="ID" onpageindexchanging=" grvDetails_PageIndexChanging">
<Columns>
<asp:TemplateField HeaderText="Page">
<HeaderTemplate>
<asp:CheckBox ID="checkAll" runat="server" onclick = "checkAll(this);"/>
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="radID" runat="server" onclick ="CheckSingleCheckbox(this)" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="ID" HeaderText="ID" ReadOnly="True"/>
<asp:BoundField DataField="FirstName" HeaderText="FirstName"/>
<asp:BoundField DataField="LastName" HeaderText="LastName"/>
<asp:BoundField DataField="Gender" HeaderText="Gender"/>
<asp:BoundField DataField="Email" HeaderText="Email"/>
<asp:BoundField DataField="Phone" HeaderText="Phone"/>
<asp:BoundField DataField="ContactAddres" HeaderText="ContactAddres"/>
<asp:BoundField DataField="State" HeaderText="ContactState"/>
<asp:BoundField DataField="Country" HeaderText="ContactCountry"/>
<asp:BoundField DataField="CommunicationAddress" HeaderText="CommunicationAddress"/>
<asp:BoundField DataField="State1" HeaderText="CommunicationState"/>
<asp:BoundField DataField="Country1" HeaderText="CommunicationCountry"/>
<asp:BoundField DataField="statec" HeaderText="ContactCountry" ShowHeader="false" />
<asp:BoundField DataField="countryc" HeaderText="CommunicationAddress" ShowHeader="false" />
<asp:BoundField DataField="CommunicationState" HeaderText="CommunicationState" ShowHeader="false" />
<asp:BoundField DataField="CommunicationCountry" HeaderText="CommunicationCountry" ShowHeader="false" />
</Columns>
</asp:GridView>
And this is my c# page and I'm posting code for update
using System;
using System.Data;
using System.Configuration;
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.Data.SqlClient;
using System.Collections.Specialized;
using System.Collections;
namespace Reg
{
public partial class Registration : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
gridView();
populate1();
populate2();
}
}
public void populate1()
{
DataSet ds = new DataSet();
SqlConnection con;
SqlCommand cmd = new SqlCommand();
con = new SqlConnection(ConfigurationManager.ConnectionStrings["ApplicationServices"].ToString());
SqlCommand com = new SqlCommand("select *from CountryDetail", con);
SqlDataAdapter da = new SqlDataAdapter(com);
da.Fill(ds);
ddlCountryPermanent.DataTextField = ds.Tables[0].Columns["Country"].ToString();
ddlCountryPermanent.DataValueField = ds.Tables[0].Columns["CID"].ToString();
ddlCountryPermanent.DataSource = ds.Tables[0];
ddlCountryPermanent.DataBind();
ddlCountryPermanent.Items.Insert(0, "Select");
ddlCountryCommunication.DataTextField = ds.Tables[0].Columns["Country"].ToString();
ddlCountryCommunication.DataValueField = ds.Tables[0].Columns["CID"].ToString();
ddlCountryCommunication.DataSource = ds.Tables[0];
ddlCountryCommunication.DataBind();
ddlCountryCommunication.Items.Insert(0, "Select");
}
public void populate2()
{
DataSet ds = new DataSet();
SqlConnection con;
SqlCommand cmd = new SqlCommand();
con = new SqlConnection(ConfigurationManager.ConnectionStrings["ApplicationServices"].ToString());
SqlCommand com = new SqlCommand("select *from StatesDetail", con);
SqlDataAdapter da = new SqlDataAdapter(com);
da.Fill(ds);
ddlStatePermanent.DataTextField = ds.Tables[0].Columns["State"].ToString();
ddlStatePermanent.DataValueField = ds.Tables[0].Columns["SID"].ToString();
ddlStatePermanent.DataSource = ds.Tables[0];
ddlStatePermanent.DataBind();
ddlStatePermanent.Items.Insert(0, "Select");
ddlStateCommunication.DataTextField = ds.Tables[0].Columns["State"].ToString();
ddlStateCommunication.DataValueField = ds.Tables[0].Columns["SID"].ToString();
ddlStateCommunication.DataSource = ds.Tables[0];
ddlStateCommunication.DataBind();
ddlStateCommunication.Items.Insert(0, "Select");
}
protected void saveButton_Click(object sender, EventArgs e)
{
DataSet ds = new DataSet();
SqlConnection con;
SqlCommand cmd = new SqlCommand();
con = new SqlConnection(ConfigurationManager.ConnectionStrings["ApplicationServices"].ToString());
cmd = new SqlCommand("proc_Registers", con);
cmd.Parameters.AddWithValue("@FirstName", txtFirstName.Text);
cmd.Parameters.AddWithValue("@LastName", txtLastName.Text);
if (RdoGender.SelectedItem.Value == "0")
{
cmd.Parameters.AddWithValue("@Gender", "0");
}
else
{
cmd.Parameters.AddWithValue("@Gender", "1");
}
cmd.Parameters.AddWithValue("@Email", txtEmail.Text);
cmd.Parameters.AddWithValue("@Phone", txtPhone.Text);
cmd.Parameters.AddWithValue("@ContactAddres", txtAddressCon.Text);
var statcon = ddlStatePermanent.SelectedItem.Value;
cmd.Parameters.AddWithValue("@ContactState", statcon);
var ddlCourtyCon = ddlCountryPermanent.SelectedItem.Value;
cmd.Parameters.AddWithValue("@ContactCountry", ddlCourtyCon);
cmd.Parameters.AddWithValue("@CommunicationAddress", txtAddressPer.Text);
var statper = ddlStateCommunication.SelectedItem.Value;
cmd.Parameters.AddWithValue("@CommunicationState", statper);
var ddlCourtyPer = ddlCountryCommunication.SelectedItem.Value;
cmd.Parameters.AddWithValue("@CommunicationCountry", ddlCourtyPer);
cmd.CommandType = CommandType.StoredProcedure;
con.Open();
cmd.ExecuteNonQuery();
con.Close();
gridView();
}
public void gridView()
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ApplicationServices"].ToString());
DataSet ds = new DataSet();
SqlDataAdapter da = new SqlDataAdapter("proc_FinalDataGridviewNew", con);
da.SelectCommand.CommandType = CommandType.StoredProcedure;
da.Fill(ds);
GridView1.DataSource = ds;
GridView1.PageSize = 5;
GridView1.Columns[1].Visible = true;
GridView1.Columns[13].Visible = true;
GridView1.Columns[14].Visible = true;
GridView1.Columns[15].Visible = true;
GridView1.Columns[16].Visible = true;
Page.DataBind();
GridView1.Columns[1].Visible = false;
GridView1.Columns[13].Visible = false;
GridView1.Columns[14].Visible = false;
GridView1.Columns[15].Visible = false;
GridView1.Columns[16].Visible = false;
}
protected void grvDetails_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
DataBind();
gridView();
}
protected void GridView_RowDataBound(object sender, GridViewRowEventArgs e)
{
e.Row.Cells[13].Visible = false;
e.Row.Cells[14].Visible = false;
e.Row.Cells[15].Visible = false;
e.Row.Cells[16].Visible = false;
}
protected void btnUpdate_Click(object sender, EventArgs e)
{
foreach (GridViewRow row in GridView1.Rows)
{
var chk = row.FindControl("radID") as CheckBox;
if (chk.Checked)
{
var ID = row.Cells[1].Text;
var fname = row.Cells[2].Text;
var lname = row.Cells[3].Text;
var gendr = row.Cells[4].Text;
var mail = row.Cells[5].Text;
var phne = row.Cells[6].Text;
var addrscon = row.Cells[7].Text;
var statecon = row.Cells[13].Text;
var countrycon = row.Cells[14].Text;
var addrsper = row.Cells[10].Text;
var stateper = row.Cells[15].Text;
var countryper = row.Cells[16].Text;
txtID.Text = ID;
txtFirstName.Text = fname;
txtLastName.Text = lname;
string gndr;
if (gendr == "Male")
{
gndr = "0";
}
else
{
gndr = "1";
}
RdoGender.SelectedValue = gndr;
txtEmail.Text = mail;
txtPhone.Text = phne;
txtAddressCon.Text = addrscon;
ddlStatePermanent.SelectedValue = statecon;
ddlCountryPermanent.SelectedValue = countrycon;
txtAddressPer.Text = addrsper;
ddlStateCommunication.SelectedValue = stateper;
ddlCountryCommunication.SelectedValue = countryper;
DataBind();
gridView();
}
else
{
lblMessage.Text = "*Please select any row to Update";
}
}
}
protected void updateButton_Click(object sender, EventArgs e)
{
string id = txtID.Text;
string fname = txtFirstName.Text;
string lname = txtLastName.Text;
string gendr = RdoGender.Text;
string mail = txtEmail.Text;
string phne = txtPhone.Text;
string addrscon = txtAddressCon.Text;
string statecon = ddlStatePermanent.SelectedItem.Value;
string countrycon = ddlCountryPermanent.SelectedItem.Value;
string addrsper = txtAddressCon.Text;
string stateper = ddlStateCommunication.SelectedItem.Value;
string countryper = ddlCountryCommunication.SelectedItem.Value;
SqlConnection con = con = new SqlConnection(ConfigurationManager.ConnectionStrings["ApplicationServices"].ToString());
con.Open();
SqlCommand cmd = new SqlCommand("proc_UpdateRegisters", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@Id", id);
cmd.Parameters.AddWithValue("@FirstName", fname);
cmd.Parameters.AddWithValue("@LastName", lname);
cmd.Parameters.AddWithValue("@Gender", gendr);
cmd.Parameters.AddWithValue("@Email", mail);
cmd.Parameters.AddWithValue("@Phone", phne);
cmd.Parameters.AddWithValue("@ContactAddres", addrscon);
cmd.Parameters.AddWithValue("@ContactState", statecon);
cmd.Parameters.AddWithValue("@ContactCountry", countrycon);
cmd.Parameters.AddWithValue("@CommunicationAddress", addrsper);
cmd.Parameters.AddWithValue("@CommunicationState", stateper);
cmd.Parameters.AddWithValue("@CommunicationCountry", countryper);
cmd.ExecuteNonQuery();
con.Close();
GridView1.EditIndex = -1;
DataTable dt = new DataTable();
cmd.CommandType = CommandType.StoredProcedure;
con.Close();
gridView();
}
// row delete
protected void btnDelete_Click(object sender, EventArgs e)
{
StringCollection idCollection = new StringCollection();
string strID = string.Empty;
for (int i = 0; i < GridView1.Rows.Count; i++)
{
CheckBox chkDelete = (CheckBox)GridView1.Rows[i].
Cells[0].FindControl("radID");
if (chkDelete != null)
{
if (chkDelete.Checked)
{
strID = GridView1.Rows[i].Cells[1].Text;
idCollection.Add(strID);
}
}
}
if (idCollection.Count > 0)
{
DeleteMultipleRecords(idCollection);
GridView1.DataBind();
}
else
{
lblMessage.Text = "*Please select any row to delete";
}
DataBind();
gridView();
}
private void DeleteMultipleRecords(StringCollection idCollection)
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ApplicationServices"].ToString());
SqlCommand cmd = new SqlCommand();
string IDs = "";
foreach (string id in idCollection)
{
IDs += id.ToString() + ",";
}
try
{
string test = IDs.Substring
(0, IDs.LastIndexOf(","));
string sql = "Delete from Registers" + " WHERE ID in (" + test + ")";
cmd.CommandType = CommandType.Text;
cmd.CommandText = sql;
cmd.Connection = con;
con.Open();
cmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
string errorMsg = "Error in Deletion";
errorMsg += ex.Message;
throw new Exception(errorMsg);
}
finally
{
con.Close();
}
}
protected void polyuria2_CheckedChanged(object sender, EventArgs e)
{
if (CheckBox1.Checked == true)
{
var peradrs = txtAddressCon.Text;
var stat = ddlStatePermanent.SelectedIndex;
var contry = ddlCountryPermanent.SelectedIndex;
txtAddressPer.Text = peradrs;
ddlStateCommunication.SelectedIndex = stat;
ddlCountryCommunication.SelectedIndex = contry;
}
}
}
}
答案 0 :(得分：1)
这是因为ViewState无法从GridView列维护CheckBox状态。最简单的解决方案是：
添加＆＃39; OnCheckedChanged＆＃39;和＆＃39; OnDataBinding＆＃39;复选框列的事件
<ItemTemplate>
<asp:CheckBox ID="radID" runat="server" OnCheckedChanged="radID_CheckedChanged" OnDataBinding="radID_DataBinding" />
</ItemTemplate>
下一步将实现这些事件：
protected void radID_CheckedChanged(object sender, EventArgs e)
{
CheckBox checkbox = (CheckBox)sender;
if (checkbox.Checked)
{
ViewState[checkbox.UniqueID] = true;
}
else
{
ViewState.Remove(checkbox.UniqueID);
}
}
protected void radID_DataBinding(object sender, EventArgs e)
{
CheckBox checkbox = (CheckBox)sender;
checkbox.Checked = ViewState[checkbox.UniqueID] != null;
}
如果有帮助，请告诉我。