获取GridView中插入的最后一行的索引

Posted 2023-02-06

考虑到用户可能在网格中有自定义排序（我不能使用最后一行），如何获取插入GridView中的最后一行的行索引。

    protected void ButtonAdd_Click(object sender, EventArgs e)
    
        SqlDataSourceCompleteWidget.Insert();
        GridViewCompleteWidget.DataBind();
        GridViewCompleteWidget.EditIndex = ??????;
    

我希望在插入发生后立即将行置于编辑模式。

UPDATE

    protected void ButtonAdd_Click(object sender, EventArgs e)
    
        //SqlDataSourceCompleteWidget.InsertParameters.Add("EFFECTIVE_DATE", Calendar1.SelectedDate.ToString("yyyy-MM-dd"));
        SqlDataSourceCompleteWidget.InsertParameters[0].DefaultValue = Calendar1.SelectedDate.ToString("yyyy-MM-dd");
        SqlDataSourceCompleteWidget.Insert();
        GridViewCompleteWidget.DataBind();
        GridViewCompleteWidget.EditIndex = 1;
    

    private int mostRecentRowIndex = -1;
    protected void GridViewCompleteWidget_RowCreated(object sender, GridViewRowEventArgs e)
    
        mostRecentRowIndex = e.Row.RowIndex;

        //GridViewCompleteWidget.EditIndex = e.Row.RowIndex;
    

答案

你想要处理RowCreated事件。您可以使用传递给此事件处理程序的GridViewRowEventArgs对象访问行数据和标识/位置。

  void YourGridView_RowCreated(Object sender, GridViewRowEventArgs e)
  
      YourGridView.EditIndex = e.Row.RowIndex;
  

另一答案

使用gridview的onitem命令进行编辑。然后，您可以使用网格列上的绑定表达式来设置您想要的任何内容。如果您使用按钮或链接按钮或其他几个，您可以使用CommandArgument

CommandArgument='<%# Eval("DataPropertyIWant") %>'

另一答案

编辑抱歉，我跳过订购是由用户完成的。我已经测试了以下代码，并且它确实尊重用户对项目的排序，但我们必须将用户带到最后一行存在的页面。

1st：插入后从数据库中检索Max（ID），将其存储在会话中

 select Max(ID) from tbl_name; -- this statement can retrieve the last ID
Session["lastID"]=lastID;

第二：

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
       
    if(e.Row.RowType==DataControlRowType.DataRow)
    if (Session["lastID"] != null)
        if ((int)DataBinder.Eval(e.Row.DataItem, "ID") == (int)Session["lastID"])
        
            //Session["rowIndex"] = e.Row.RowIndex;
            int rowIndex=e.Row.RowIndex;



            if (Session["type"] != null)
                if (Session["type"].ToString() == "Normal")
                
                    int integ;
                    decimal fract;
                    integ = rowIndex / GridView1.PageSize;
                    fract = ((rowIndex / GridView1.PageSize) - integ;
                    if (fract > 0)
                        GridView1.PageIndex = integ;
                    else if (integ > 0) GridView1.PageIndex = integ - 1;

                    GridView1.EditIndex = rowIndex;
                
        

第3步：将commandField转换为TemplateFields并设置其CommandArgument =“Command”我将使用此参数来识别触发RowDataBound事件的内容。我将值存储在Session [“type”]中。默认值为页面加载事件中定义的“正常”。

if(!IsPostBack)
  Session["type"]="Normal";

另一个值在RowCommand事件中设置

 protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)

    if (e.CommandArgument == "Command")
        Session["type"] = "Command";

它对我很好。 对不起我的语言，可能是不必要的细节。

另一答案

更新：我在this post工作

我假设您只是在执行插入后返回一个值，但您可以在插入记录的任何位置设置ID。

private int mostRecentRowIndex = -1;  //edit index
    private bool GridRebound = false;  //used to make sure we don't rebind
    private string ID;  //Is set to the last inserted ID

    protected void Page_Load(object sender, EventArgs e)
    
        if (Page.IsPostBack)
        
            //Set so grid isn't rebound on postback
            GridRebound = true;
        
    

    protected void ButtonAdd_Click(object sender, EventArgs e)
    
        SqlDataSourceCompleteWidget.InsertParameters[0].DefaultValue = Calendar1.SelectedDate.ToString("yyyy-MM-dd");
        ID = SqlDataSourceCompleteWidget.Insert();
        GridViewCompleteWidget.DataBind();
    


    protected void GridViewCompleteWidget_RowDataBound(object sender, GridViewRowEventArgs e)
    
        //Check that the row index >= 0 so it is a valid row with a datakey and compare 
        //the datakey to ID value
        if (e.Row.RowIndex >= 0 && GridViewCompleteWidget.DataKeys[e.Row.RowIndex].Value.ToString() == ID)
        
            //Set the edit index
            mostRecentRowIndex = e.Row.RowIndex;
        
    

    protected void GridViewCompleteWidget_DataBound(object sender, EventArgs e)
    
        //Set Gridview edit index if isn't -1 and page is not a post back
        if (!GridRebound && mostRecentRowIndex >= 0)
        
            //Setting GridRebound ensures this only happens once
            GridRebound = true;
            GridViewCompleteWidget.EditIndex = mostRecentRowIndex;
            GridViewCompleteWidget.DataBind();
        
    

选择是否在gridview中插入最后一条记录（无排序）

您应该能够从数据源获取行数:(减1，因为行从0开始，计数从1开始）

GridViewCompleteWidget.EditIndex = ((DataTable)GridViewCompleteWidget.DataSource).Rows.Count - 1;

但是在绑定数据之前把它放在：

protected void ButtonAdd_Click(object sender, EventArgs e)
    
        SqlDataSourceCompleteWidget.Insert();
        GridViewCompleteWidget.EditIndex = ((DataTable)GridViewCompleteWidget.DataSource).Rows.Count - 1;
        GridViewCompleteWidget.DataBind();