ASP.WEB Form 几点知识
1、GridView 行的多选
<asp:TemplateField ControlStyle-Width="30" HeaderText="选择" >
<ItemTemplate>
<asp:CheckBox ID="DeleteThis" onclick="javascript:CCA(this);" runat="server" />
</ItemTemplate>
</asp:TemplateField>
private string GetSelIDlist()
{
string idlist = "";
bool BxsChkd = false;
for (int i = 0; i < gridView.Rows.Count; i++)
{
CheckBox ChkBxItem = (CheckBox)gridView.Rows[i].FindControl("DeleteThis");
if (ChkBxItem != null && ChkBxItem.Checked)
{
BxsChkd = true;
//#warning 代码生成警告：请检查确认Cells的列索引是否正确
if (gridView.DataKeys[i].Value != null)
{
idlist += gridView.DataKeys[i].Value.ToString() + ",";
}
}
}
if (BxsChkd)
{
idlist = idlist.Substring(0, idlist.LastIndexOf(","));
}
return idlist;
}
/// <summary>
/// 批量删除数据
/// </summary>
public bool DeleteList(string Idlist )
{
StringBuilder strSql=new StringBuilder();
strSql.Append("delete from General_KnowledgePoint ");
strSql.Append(" where Id in ("+Idlist + ") ");
int rows=DbHelperSQL.ExecuteSql(strSql.ToString());
if (rows > 0)
{
return true;
}
else
{
return false;
}
}
方式二：
<script type="text/JavaScript">
function CheckBoxAll() {
if ($("input[id*='ContentPlaceHolder1_GVListShow_chkAllProp']").attr("checked") == true) {
$("input[id*='chkSelect']").attr("checked", true);
}
else {
$("input[id*='chkSelect']").attr("checked", false);
}
}
</script>
<asp:TemplateField HeaderText="选择">
<HeaderTemplate>
<input type="checkbox" id="chkAllProp" runat="server" onclick="CheckBoxAll()" />全选
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="chkSelect" runat="server" Text="选择" />
</ItemTemplate>
</asp:TemplateField>
//取主键值
string GetIndexKey()
{
string indexKey = "";
for (int i = 0; i <= GVListShow.Rows.Count - 1; i++)
{
CheckBox cbox = (CheckBox)GVListShow.Rows[i].FindControl("chkSelect");
if (cbox.Checked == true)
{
if (indexKey == "")
{
indexKey = GVListShow.Rows[i].Cells[0].Text.Trim();
}
else
{
indexKey += "," + GVListShow.Rows[i].Cells[0].Text.Trim();
}
}
}
return indexKey;
}
相关实例：
//批量删除
protected void btnDelect_Click(object sender, EventArgs e)
{
string indexKeys = GetIndexKey();
if (indexKeys != "")
{
string strWhere = string.Format("Id in ({0})", indexKeys);
DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();
if (1 <= BLL.DeleteWhere(strWhere, null))
{
Web_ArticleBind();
}
}
}
protected void btnTop_Click(object sender, EventArgs e)
{
string indexKeys = GetIndexKey();
if (indexKeys != "")
{
DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();
int maxTopNum = 0;
string strGetWhere = "ComanyId = " + USER.SchoolId;
object selMaxTopNum = BLL.GetSingle("Max(OrderNum)", strGetWhere, null);
string strWhere = string.Format("Id in ({0})", indexKeys);
if (selMaxTopNum != null)
{
maxTopNum = int.Parse(selMaxTopNum.ToString()) + 1;
if (1 <= BLL.Update("OrderNum = " + maxTopNum, strWhere, null))
{
Web_ArticleBind();
}
}
}
}
protected void btnCancelTop_Click(object sender, EventArgs e)
{
string indexKeys = GetIndexKey();
if (indexKeys != "")
{
DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();
int maxTopNum = 0;
//object selMaxTopNum = BLL.GetSingle("Max(top_num)", "", null);
string strWhere = string.Format("Id in ({0})", indexKeys);
if (1 <= BLL.Update("OrderNum = " + maxTopNum, strWhere, null))
{
Web_ArticleBind();
}
}
}
//审核新闻
protected void btnPass_Click(object sender, EventArgs e)
{
string indexKeys = GetIndexKey();
if (indexKeys != "")
{
DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();
string strWhere = string.Format("Id in ({0})", indexKeys);
if (1 <= BLL.Update("StateNum = 2,StateName='已审核' ", strWhere, null))
{
//Response.Redirect(Request.Url.ToString());
Web_ArticleBind();
}
}
}
//取消审核
protected void btnUnpass_Click(object sender, EventArgs e)
{
string indexKeys = GetIndexKey();
string strUpdate = "SavedOn=getdate()";
if (indexKeys != "")
{
DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();
string strWhere = string.Format("Id in ({0})", indexKeys);
if (1 <= BLL.Update(strUpdate+",StateNum = 1,StateName='未审核'", strWhere, null))
{
//Web_NewsBind();
//Response.Redirect(Request.Url.ToString());
Web_ArticleBind();
}
}
}
//转移新闻栏目
protected void btnChangeCategory_Click(object sender, EventArgs e)
{
if (DdlCategoryIdNew.SelectedValue.Trim() == "0")
{
DotNet.Common.MessageBox.Show(this, "请选择栏目");
return;
}
string indexKeys = GetIndexKey();
if (indexKeys != "")
{
DotNet.BLL.Web_Article BLL = new DotNet.BLL.Web_Article();
string strField = "CategoryId = @CategoryId,CategoryName = @CategoryName";
Hashtable ht = new Hashtable();
ht.Add("@CategoryId", DdlCategoryIdNew.SelectedValue.Trim());
ht.Add("@CategoryName", DdlCategoryIdNew.SelectedItem.Text.Trim());
string strWhere = string.Format("Id in ({0})", indexKeys);
if (1 <= BLL.Update(strField, strWhere, ht))
{
Web_ArticleBind();
}
}
}