如何在代碼隱藏中獲取gridview列值

Question

如何在代碼隱藏中從gridView中獲取AppId，如果我單擊第二行的編輯圖像按鈕。

.aspx的代碼：

<asp:BoundField HeaderText="AppId" DataField="AppID" /> 


<asp:TemplateField HeaderText="Actions" ControlStyle-Width="20px" ItemStyle-Width="130px"> 
        <ItemTemplate> 
         <asp:ImageButton ID="imgMailCamp" runat="server" ImageUrl="~/Images/AppSetup/Mail.png" 
          Height="18px" ToolTip="Send Mail Campaign" CssClass="grdImageAlign" CommandName="SendMail" OnClick="btnMailCamp_Click" /> 
         <asp:ImageButton ID="imgViewApp" runat="server" ImageUrl="~/Images/AppSetup/application-view-list-icon.png" 
          Height="18px" ToolTip="View Appplication" CssClass="grdImageAlign" CommandName="View" OnClick="btnView_Click" /> 
         <asp:ImageButton ID="imgEditApp" runat="server" ImageUrl="~/Images/AppSetup/Action-edit-icon.png" 
          Height="18px" ToolTip="Edit Application" CssClass="grdImageAlign" CommandName="Edit" OnClick="btnEdit_Click"/> 
         <asp:ImageButton ID="imgDeleteApp" runat="server" ImageUrl="~/Images/AppSetup/Trash-can-icon.png" 
          Height="18px" ToolTip="Delete Application" CssClass="grdImageAlign" CommandName="Delete" OnClick="btnDelete_Click" /> 
        </ItemTemplate> 
       </asp:TemplateField> 

C＃代碼：

protected void btnEdit_Click(object sender, EventArgs e) 
{ 
    // I need to get the current row appId, I use this appId in next page for sql query 
    Response.Redirect("/Secured/EditApplication.aspx?AppID="+AppID); 
} 

Answer 1

嘗試像這樣....不要定義點擊按鈕的事件.. ..定義按鈕像這樣...

 <asp:ImageButton ID="imgEditApp" runat="server" 
ImageUrl="~/Images/AppSetup/Action-edit-icon.png" 
    Height="18px" ToolTip="Edit Application" CssClass="grdImageAlign" 
CommandName="Edit"/> 

而且 定義你的GridView RowEditing事件像這樣....

protected void gv_RowEditing(object sender, GridViewEditEventArgs e) 
     { 
      Response.Redirect("/Secured/EditApplication.aspx?AppID="+YourGridViewId.Rows[e.NewEditIndex].Cells[1].Text); 
     } 

編輯： 我想你在definig RowEditingEvent有問題..... OK，你可以做到這一點.. .nothing改變只寫這段代碼在你點擊事件...

protected void btnEdit_Click(object sender, EventArgs e) 
{ 
     ImageButton ib = sender as ImageButton; 
     GridViewRow row = ib.NamingContainer as GridViewRow; 
    Response.Redirect("/Secured/EditApplication.aspx?AppID="+YourGridViewId.Rows[row.RowIndex].Cells[1].Text); 
} 

編輯2

<asp:ImageButton ID="imgEditApp" runat="server" 
ImageUrl="~/Images/AppSetup/Action-edit-icon.png" 
    Height="18px" ToolTip="Edit Application" CssClass="grdImageAlign" 
CommandName="Edit" CommandArgument='<%#Eval("AppID") %>'/> 

    protected void btnEdit_Click(object sender, EventArgs e) 
    { 
string appid= (sender as ImageButton).CommandArgument; 
     Response.Redirect("/Secured/EditApplication.aspx?AppID="+appid 
    } 

Answer 2

您可以從中獲取網格視圖單元格值。

GridView.Rows[RowIndex].Cells[CellIndex].Text 

這裏「的rowIndex」是要獲取數據和「CellIndex」是要獲取數據細胞數行數。

我認爲gridview的事件「OnRowCommand」最適合您的問題。 使用的吹瓶鏈接查看更多細節

http://www.codeproject.com/Tips/564619/Example-of-gridview-rowcommand-on-Button-Click

Answer 3

應該與commandargument
ASPX

<asp:ImageButton ID="imgEditApp" CommandArgument='<%# Eval("AppID") %>' runat="server" ... OnClick="btnEdit_Click"/> 

代碼

protected void gv_RowEditing(object sender, GridViewEditEventArgs e) 
     { 
      int categoryId = Convert.ToInt32(e.CommandArgument); 
      Response.Redirect("/Secured/EditApplication.aspx?AppID="+categoryId); 
     } 

或U可以使用的ImageButton的PostBackUrl財產它會是這樣的：

<asp:ImageButton ID="imgEditApp" PostBackUrl='<%# string.Format("/Secured/EditApplication.aspx?AppID={0}", Eval("AppID")) %>' runat="server" /> 

Answer 4

檢查此代碼段。

這是aspx文件中的代碼，包含兩列DataBound「AppId」和包含圖像按鈕的TemplateColumn「Action」。觀察Image Button的CommandName和CommandArgument屬性。還爲gridview定義OnRowCommand事件偵聽器。

<asp:GridView ID="grdDisplayData" runat="server" AutoGenerateColumns="false" 
      EnableViewState="false" onrowcommand="grdDisplayData_RowCommand"> 
      <Columns> 
       <asp:BoundField HeaderText="AppId" DataField="AppId" /> 
       <asp:TemplateField HeaderText="Action" > 
        <ItemTemplate> 
         <asp:Button ID="btnEdit" runat="server" Text="Edit" CommandName="MyEdit" 
         CommandArgument="<%# ((GridViewRow) Container).RowIndex%>"/> 
        </ItemTemplate> 
       </asp:TemplateField> 
       <asp:TemplateField HeaderText="ImageAction"> 
        <ItemTemplate> 
         <asp:ImageButton ID="ImageButton1" runat="server" Width="15px" Height="15px" 
          CommandName="ImgEdit" CommandArgument="<%# ((GridViewRow) Container).RowIndex%>"/> 
        </ItemTemplate> 
       </asp:TemplateField> 
      </Columns> 
     </asp:GridView> 

這裏是代碼背後的代碼。 e.CommandArument返回單擊圖像按鈕的行的索引。

protected void grdDisplayData_RowCommand(object sender, System.Web.UI.WebControls.GridViewCommandEventArgs e) 
     { 
      if (e.CommandName == "ImgEdit") 
      { 
       int RowIndex = Convert.ToInt32(e.CommandArgument); 
       Response.Redirect("/Secured/EditApplication.aspx?AppID=" + grdDisplayData.Rows[RowIndex].Cells[1].Text.Trim()); 
      } 
     } 

讓我知道這是否解決了您的問題。

乾杯！ Piyush Deshpande