知识大全 DataGrid中的按钮反选事件

Posted 2022-07-14 知

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　　DataGrid中想实现这样的效果根据某一字段列的值动态改变按钮的文本比如点击按钮列自动更新某列原为的值为并将按钮列的文本改为置再按下自动更新某列原为的值为并将按钮列的文本改为置

<asp:DataGrid id= DataGrid runat= server AutoGenerateColumns= False > <Columns> <asp:BoundColumn DataField= HonoreeID HeaderText= ID ></asp:BoundColumn> <asp:BoundColumn DataField= status HeaderText= 状态 > <HeaderStyle Width= px ></HeaderStyle> </asp:BoundColumn> <asp:TemplateColumn HeaderText= 状态是否为 > <HeaderStyle HorizontalAlign= Center Width= % ></HeaderStyle> <ItemStyle HorizontalAlign= Center ></ItemStyle> <ItemTemplate> <asp:Label id= lb runat= server Visible= false Text= <%# ((DataBinder Eval(Container DataItem status ))== )? 是 : <font color=red>否</font> %> > </asp:Label> <asp:Button ID= changeState Runat= server Text= <%# ((DataBinder Eval(Container DataItem status ))== )? 转为 : 转为 %> > </asp:Button> </ItemTemplate> </asp:TemplateColumn> </Columns> </asp:DataGrid>后台 protected System Web UI WebControls DataGrid DataGrid ; public int KeyID get object o =ViewState [ KeyID ]; if(o!=null) return int Parse(ViewState [ KeyID ] ToString()); else return ; set ViewState [ KeyID ] = value; public int RowState get return int Parse(ViewState [ RowState ] ToString()); set ViewState [ RowState ] = value; private void Page_Load(object sender System EventArgs e) if(IsPostBack) return ; getData(); private void getData() //SqlConnection con = new SqlConnection(ConfigurationSettings AppSettings[ DsnPubs ]); SqlConnection con = new SqlConnection(System Configuration ConfigurationSettings AppSettings[ Mblog ]); SqlCommand cmd; con Open(); cmd = new SqlCommand( select * from dbo Honoree con); DataGrid DataSource = cmd ExecuteReader(); DataGrid DataBind(); con Close(); private bool UpdateData(int ID int OldState) SqlConnection con = new SqlConnection(System Configuration ConfigurationSettings AppSettings[ Mblog ]); SqlCommand cmd; con Open(); try string strSql= Update Honoree set Status= where HonoreeID= ; strSql=string Format(strSql (OldState== ? : ) ToString() ID ToString()); cmd = new SqlCommand(strSql con); cmd ExecuteNonQuery(); cmd Dispose(); return true; catch return false; finally con Close(); con Dispose(); return false; Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码 override protected void OnInit(EventArgs e) // // CODEGEN: 该调用是 ASP NET Web 窗体设计器所必需的 // InitializeComponent(); base OnInit(e); /**//// <summary> /// 设计器支持所需的方法不要使用代码编辑器修改 /// 此方法的内容 /// </summary> private void InitializeComponent() this DataGrid ItemCreated += new System Web UI WebControls DataGridItemEventHandler(this DataGrid _ItemCreated); this DataGrid ItemDataBound += new System Web UI WebControls DataGridItemEventHandler(this DataGrid _ItemDataBound); this Load += new System EventHandler(this Page_Load); #endregion private void DataGrid _ItemCreated(object sender System Web UI WebControls DataGridItemEventArgs e) if(e Item ItemType==ListItemType Item || e Item ItemType == ListItemType AlternatingItem) Button b=(Button)e Item FindControl( changeState ); if(b!=null) b Click+=new EventHandler(b_Click); private void DataGrid _ItemDataBound(object sender System Web UI WebControls DataGridItemEventArgs e) private void b_Click(object sender EventArgs e) Button but = (Button)sender; DataGrid dg = (DataGrid)but NamingContainer NamingContainer; //此处是关键！！即找到包含按钮的命名容器的上层命名容器 if(dg == null) return; DataGridItem di =(DataGridItem)but NamingContainer; TableCell key= (TableCell)di Cells[ ]; TableCell state= (TableCell)di Cells[ ]; KeyID=(key==null)? :int Parse(key Text); RowState=(state==null)? :int Parse(state Text); Response Write(UpdateData(this KeyID this RowState) ToString()); getData(); cha138/Article/program/net/201311/13037