<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="checkMail" runat="server" Checked="false"/>
</ItemTemplate>
<ItemStyle HorizontalAlign="Center" />
<HeaderStyle Width="5%" />
</asp:TemplateField>
try
{
foreach (GridViewRow row in MailView.Rows)
{ ///获取控件
bool isChecked = ((CheckBox)row.FindControl("checkMail")).Checked;
CheckBox checkMail = (CheckBox)row.FindControl("checkMail");//.FindControl("CheckMail");
//string s = MailView.Rows[0].Cells[0].ID.ToString();
//int s = MailView.Controls.;
if (checkMail != null)
{
if (checkMail.Checked == true)
{
///执行数据库操作
string a = "";
//mail.DeleteMail(Int32.Parse(MailView.DataKeys[row.RowIndex].Value.ToString()));
}
}
}
为什么isChecked 始终是FALSE，无论我怎么点checkbox， isChecked始终是FALSE。求解。
BindData();
因为在每次点选择执行事件之前都要先执行page_load事件,控件又会被置为false,绑定数据放在!IsPostBack可以避免.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DataClass;
using System.Data;namespace m2c.index.Message
{
public partial class Mes_Send : BasePage
{
/// <summary>
/// 1:添加 2:修改.
/// </summary>
private int nTypeID = 0; protected void Page_Load(object sender, EventArgs e)
{
if (!int.TryParse(this.Request.QueryString["nTypeID"], out nTypeID))
{
return;
} if (!IsPostBack)
{
BindData();
if (nTypeID == 2)
{
hfMesid.Value = Request.QueryString["nmesid"].ToString();
hfUserid.Value = Request.QueryString["nuserid"].ToString();
BindCheckBoxList();
} }
} private void BindData()
{
DataSet ds = SQLHelper2.ExecuteDataSet(SQLHelper2.ConnectionStringLocalTransaction, CommandType.Text, "select distinct m2c_OSP_DepartMent.* from m2c_OSP_DepartMent left join dbo.m2c_OSP_User on m2c_OSP_DepartMent.autoid=dbo.m2c_OSP_User.DepartMentId where m2c_OSP_DepartMent.IsEnable=1 and dbo.m2c_OSP_User.DepartMentId in(select distinct DepartMentId from dbo.m2c_OSP_User where m2c_OSP_User.IsEnable=1)");
dlt.DataSource = ds.Tables[0];
dlt.DataBind();
ds.Dispose();
} private void BindCheckBoxList()
{
for (int i = 0; i < dlt.Items.Count; i++)
{
CheckBoxList cbl = (CheckBoxList)dlt.Items[i].FindControl("cbl");
foreach (ListItem li in cbl.Items)
{
if (li.Value == hfUserid.Value)
{
li.Selected = true;
}
} }
} protected void btnSubmit_Click(object sender, EventArgs e)
{
bool flag = true;
string struserid = string.Empty;
for (int i = 0; i < dlt.Items.Count; i++)
{
CheckBoxList cbl = (CheckBoxList)dlt.Items[i].FindControl("cbl");
foreach (ListItem li in cbl.Items)
{
if (li.Selected)
{
struserid += "'" + li.Value + "',";
flag = false;
}
} } while (struserid.EndsWith(","))
{
struserid = struserid.Substring(0, struserid.Length - 1);
}
if (flag)
{
Jscript.Alert("请选择发送人");
}
else
{
if (nTypeID == 1)
{
int strmesid = Convert.ToInt32(SQLHelper2.ExecuteScalar(SQLHelper2.ConnectionStringLocalTransaction, CommandType.Text, "insert into dbo.m2c_OSP_Message (MesContent,Author,IPaddr,[Status],Ntype)values('" + tarContent.Value + "','" + GetUser().User_Id + "','" + StaticMethod.GetClientIP() + "','1','1')select SCOPE_IDENTITY() as mesid;", null));
string strsql = "insert into dbo.m2c_OSP_MesUItems (mesid,recuser) select '" + strmesid + "' as mesid,m2c_OSP_User.[User_Id] as recuser from dbo.m2c_OSP_User where m2c_OSP_User.[User_Id] in(" + struserid + ")";
SQLHelper2.ExecuteNonQuery(SQLHelper2.ConnectionStringLocalTransaction, CommandType.Text, strsql, null);
Jscript.AlertAndRedirect("发布成功！", "Mes_Send.aspx?nTypeid=1");
}
else if (nTypeID == 2)
{
int strmesid = Convert.ToInt32(SQLHelper2.ExecuteScalar(SQLHelper2.ConnectionStringLocalTransaction, CommandType.Text, "insert into dbo.m2c_OSP_Message (MesContent,Author,IPaddr,[Status],Ntype)values('" + tarContent.Value + "','" + GetUser().User_Id + "','" + StaticMethod.GetClientIP() + "','1','2')select SCOPE_IDENTITY() as mesid;", null));
string strsql2 = "insert into dbo.m2c_OSP_MesUItems (mesid,recuser) select '" + strmesid + "' as mesid,m2c_OSP_User.[User_Id] as recuser from dbo.m2c_OSP_User where m2c_OSP_User.[User_Id] in(" + struserid + ")";
SQLHelper2.ExecuteNonQuery(SQLHelper2.ConnectionStringLocalTransaction, CommandType.Text, strsql2, null);
Jscript.AlertAndRedirect("回复成功！", "Mes_SendList.aspx");
}
}
} protected void btnBack_Click(object sender, EventArgs e)
{
Jscript.GoHistory(-2);
} protected void cb_CheckedChanged(object sender, EventArgs e)
{
for (int i = 0; i < this.dlt.Items.Count; i++)
{
CheckBox cb = (CheckBox)dlt.Items[i].FindControl("cb");
CheckBoxList cbl = (CheckBoxList)dlt.Items[i].FindControl("cbl"); for (int j = 0; j < cbl.Items.Count; j++)
{
if (cb.Checked == true)
{
cbl.Items[j].Selected = true;
}
else if (cb.Checked == false)
{
cbl.Items[j].Selected = false;
} } }
} protected void dlt_ItemDataBound(object sender, DataListItemEventArgs e)
{
string strid = dlt.DataKeys[e.Item.ItemIndex].ToString();
DataSet ds2 = SQLHelper2.ExecuteDataSet(SQLHelper2.ConnectionStringLocalTransaction, CommandType.Text, "select [User_id],[User_id]+'-'+[User_name] as uname from dbo.m2c_OSP_User left join dbo.m2c_OSP_DepartMent on m2c_OSP_User.DepartMentId=m2c_OSP_DepartMent.autoid where m2c_OSP_User.isenable=1 and dbo.m2c_OSP_DepartMent.isenable=1 and m2c_OSP_DepartMent.autoid='" + strid + "'");
CheckBoxList cbl = (CheckBoxList)e.Item.FindControl("cbl");
cbl.DataSource = ds2.Tables[0];
cbl.DataTextField = "uname";
cbl.DataValueField = "User_id";
cbl.DataBind();
ds2.Dispose();
} }
}楼主你照着我的代码改总会吧？