1 GRIDVIEW FINDCONTROL的使用 2 Gridview FindControl的使用 3 //先看看FindControl的源码 4 protected virtual Control FindControl(string id, int pathOffset) { string str; this.EnsureChildControls(); if (!this.flags[0x80]) { Control namingContainer = this.NamingContainer; if (namingContainer != null) { return namingContainer.FindControl(id, pathOffset);//向上递归 } return null; } if (this.HasControls() && (this._occasionalFields.NamedControls == null)) { this.EnsureNamedControlsTable(); } if ((this._occasionalFields == null) || (this._occasionalFields.NamedControls == null)) { return null; } char[] anyOf = new char[] { '$', ':' };//name，id int num = id.IndexOfAny(anyOf, pathOffset); if (num == -1)//不再存在父控件（容器）时，获得该查找ID的控件 { str = id.Substring(pathOffset); return (this._occasionalFields.NamedControls[str] as Control); } str = id.Substring(pathOffset, num - pathOffset);//否则，继续寻找父控件（容器），调用其FindControl方法 Control control2 = this._occasionalFields.NamedControls[str] as Control; if (control2 == null) { return null; } return control2.FindControl(id, num + 1);//pathOffset往上一级 } 5 //再看GridView列 6 <asp:GridView ID="GridView1" runat="server" onrowdatabound="GridView1_RowDataBound" Width="1680px"> 7 <Columns> 8 <asp:TemplateField HeaderText="编码"> 9 <ItemTemplate> 10 <asp:Literal ID="Literal1" runat="server" Text='<%# eval_r("ID") %>' Visible="false"></asp:Literal> 11 <asp:HyperLink ID="HyperLink1" runat="server" 12 NavigateUrl='<%# eval_r("ID", "Edit.aspx?Id={0}") %>' Text='<%# eval_r("ID") %>'></asp:HyperLink> 13 </ItemTemplate> 14 </asp:TemplateField> 15 <asp:BoundField DataField="FindDeptName" HeaderText="发现单位" > 16 <ItemStyle Width="80px" /> 17 </asp:BoundField> 18 <asp:BoundField DataField="FindUserName" HeaderText="发现人" > 19 <ItemStyle Width="50px" /> 20 </asp:BoundField> 21 <asp:BoundField DataField="FindWay" HeaderText="发现方式" > 22 <ItemStyle Width="60px" /> 23 </asp:BoundField> 24 <asp:BoundField HeaderText="所在装置" DataField="SZZZ" > 25 <ItemStyle Width="90px" /> 26 </asp:BoundField> 27 <asp:BoundField HeaderText="隐患内容" DataField="YHNR" > 28 <ItemStyle HorizontalAlign="Left" Width="280px" /> 29 </asp:BoundField> 30 <asp:BoundField HeaderText="所属专业" DataField="SSZY" > 31 <ItemStyle Width="60px" /> 32 </asp:BoundField> 33 <asp:BoundField HeaderText="类别" DataField="Kind" > 34 <ItemStyle Width="40px" /> 35 </asp:BoundField> 36 <asp:BoundField HeaderText="危害后果" DataField="WHHG" > 37 <ItemStyle Width="60px" /> 38 </asp:BoundField> 39 <asp:BoundField HeaderText="整改措施" DataField="ZGCS" > 40 <ItemStyle HorizontalAlign="Left" Width="220px" /> 41 </asp:BoundField> 42 <asp:BoundField HeaderText="整改责任人" DataField="ZGFZR" > 43 <ItemStyle Width="80px" /> 44 </asp:BoundField> 45 <asp:BoundField HeaderText="计划完成时间" DataField="PLANDATE" HtmlEncode="false" DataFormatString="{0:d}" > 46 <ItemStyle Width="80px" /> 47 </asp:BoundField> 48 <asp:BoundField HeaderText="整改完成时间" DataField="FINISHDATE" HtmlEncode="false" DataFormatString="{0:d}" > 49 <ItemStyle Width="80px" /> 50 </asp:BoundField> 51 <asp:TemplateField HeaderText="监督人验收"> 52 <ItemTemplate> 53 <asp:Label ID="Label2" runat="server" Text='<%# eval_r("JDR")%>'></asp:Label> 54 <asp:LinkButton ID="lbYS" runat="server" Text="验收" CommandName="Submit" 55 CommandArgument='<%#eval_r("ID") %>' 56 Visible='<%#Bll.SessionManage.IsYSRole && (DateTime.Parse(eval_r("PLANDATE").ToString()) >=DateTime.Now.Date) && eval_r("JDR").ToString()==""?true:false %>' oncommand="lbYS_Command"></asp:LinkButton> 57 </ItemTemplate> 58 </asp:TemplateField> 59 <asp:TemplateField HeaderText="验收状态"> 60 <ItemTemplate> 61 <asp:Label ID="Label1" runat="server" Text='<%# (DateTime.Parse(eval_r("PLANDATE").ToString()) <DateTime.Now.Date) && (eval_r("JDR").ToString() =="")?"已列入考核":"" %>' ></asp:Label> 62 </ItemTemplate> 63 </asp:TemplateField> 64 <asp:TemplateField HeaderText="确认提交"> 65 <ItemTemplate> 66 <asp:HiddenField ID="HiddenField1" runat="server" Value='<%#eval_r("WTKZT") %>' /> 67 <asp:LinkButton ID="lbTJ" runat="server" Text="提交" CommandName="Submit" 68 CommandArgument='<%#eval_r("ID") %>' oncommand="LinkButton1_Command" Visible='<%#eval_r("WTKZT").ToString()==""?true:false %>'></asp:LinkButton> 69 </ItemTemplate> 70 </asp:TemplateField> 71 </Columns> 72 </asp:GridView> 73 //最后看GridView的一行html源码 74 <tr align="center" onmousemove="this.style.backgroundColor='#EDF7F8'" onmouseout="this.style.backgroundColor='#ffffff'"> 75 <td>20100426112155</td> 76 <td style="80px;">动力</td> 77 <td style="50px;">管理员</td> 78 <td style="60px;">监控</td> 79 <td style="90px;">2#煤气化</td> 80 <td align="left" style="280px;">a</td> 81 <td style="60px;">设备</td> 82 <td style="40px;">设备</td> 83 <td style="60px;">轻</td> 84 <td align="left" style="220px;"> </td> 85 <td style="80px;"> </td> 86 <td style="80px;">2010-5-11</td> 87 <td style="80px;">2010-5-11</td> 88 <td><span id="GridView1_ctl03_Label2"></span></td> 89 <td><span id="GridView1_ctl03_Label1"></span></td> 90 <td><input type="hidden" name="GridView1$ctl03$HiddenField1" id="GridView1_ctl03_HiddenField1" value="1" /> 91 </td> 92 </tr> 93 结论： 94 当使用Cell[n].FindControl方法时，是从最低一级开始查，如Cell[n].FindControl("HiddenField1") 95 然后Cell会自动调用Rows[n].FindControl("ctl03$HiddenField1")，pathOffset加1，因为每行控件名称都不一样，这是自动 96 将控件名称补全，pathOffset再加1，最后调用GridView.FindControl("GridView1$ctl03$HiddenField1") 97 所以我们使用Cell[1]和Cell[20]的FindControl方法时，返回结果是一样的。 98 但是Rows[1]和Rows[20]的FindControl方法时，返回结果是不一样的。因为向上级反映的ctl(n)是不一样的。 99 100 例子：上述控件的部分代码 101 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) 102 { 103 if (e.Row.RowType == DataControlRowType.DataRow) 104 { 105 //超期、未验收 红色停止、已列入考核 106 if ((e.Row.Cells[14].FindControl("Label1") as Label).Text == "已列入考核") 107 { 108 e.Row.Attributes.Clear(); 109 e.Row.Attributes["style"] = "background-color:red; color:white;"; 110 HyperLink hl = (e.Row.Cells[0].FindControl("HyperLink1") as HyperLink); 111 if (hl !=null) 112 { 113 hl.Attributes["style"] = "color:white"; 114 } 115 LinkButton lb = (e.Row.Cells[15].FindControl("lbTJ") as LinkButton); 116 if (lb != null) 117 { 118 lb.Attributes["style"] = "color:white"; 119 } 120 } 121 //已验收 绿色通过 122 if ((e.Row.Cells[13].FindControl("Label2") as Label).Text != "") 123 { 124 e.Row.Attributes.Clear(); 125 e.Row.Attributes["style"] = "background-color:#00A600; color:white;"; 126 HyperLink hl = (e.Row.Cells[0].FindControl("HyperLink1") as HyperLink); 127 if (hl != null) 128 { 129 hl.Attributes["style"] = "color:white"; 130 } 131 LinkButton lb = (e.Row.Cells[15].FindControl("lbTJ") as LinkButton); 132 if (lb != null) 133 { 134 lb.Attributes["style"] = "color:white"; 135 } 136 } 137 } 138 } 139 可以更改为如下代码，好处是不用再挨个去数某个单元格，然后调用其FindControl方法了。 140 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) 141 { 142 if (e.Row.RowType == DataControlRowType.DataRow) 143 { 144 //超期、未验收 红色停止、已列入考核 145 if ((e.Row.FindControl("Label1") as Label).Text == "已列入考核") 146 { 147 e.Row.Attributes.Clear(); 148 e.Row.Attributes["style"] = "background-color:red; color:white;"; 149 HyperLink hl = (e.Row.FindControl("HyperLink1") as HyperLink); 150 if (hl !=null) 151 { 152 hl.Attributes["style"] = "color:white"; 153 } 154 LinkButton lb = (e.Row.FindControl("lbTJ") as LinkButton); 155 if (lb != null) 156 { 157 lb.Attributes["style"] = "color:white"; 158 } 159 } 160 //已验收 绿色通过 161 if ((e.Row.FindControl("Label2") as Label).Text != "") 162 { 163 e.Row.Attributes.Clear(); 164 e.Row.Attributes["style"] = "background-color:#00A600; color:white;"; 165 HyperLink hl = (e.Row.FindControl("HyperLink1") as HyperLink); 166 if (hl != null) 167 { 168 hl.Attributes["style"] = "color:white"; 169 } 170 LinkButton lb = (e.Row.FindControl("lbTJ") as LinkButton); 171 if (lb != null) 172 { 173 lb.Attributes["style"] = "color:white"; 174 } 175 } 176 } 177 }