Get DataKey values in GridView RowCommand

Question

I have a GridView with an associated DataKey  which is the item ID  How do I retrieve that value inside the RowCommand event   This seems to work  but I don t like the cast to LinkButton  what if some other command is firing the event    and I m not too confident about the NamingContainer bit   LinkButton lb    LinkButton e CommandSource  GridViewRow gvr    GridViewRow lb NamingContainer  int id    int grid DataKeys gvr RowIndex  Value    I m aware that I could instead pass that ID as the CommandArgument  but I chose to use DataKey to give me more flexibility   I m also aware that it s possible to use a hidden field for the ID  but I consider that a hack that I don t want to use

User · Answer

foreach  GridViewRow gvr in gvMyGridView Rows        string PrimaryKey   gvMyGridView DataKeys gvr RowIndex  Values 0  ToString        You can use this code while doing an iteration with foreach or for any GridView event like OnRowDataBound   Here you can input multiple values for DataKeyNames by separating with comma    For example  DataKeyNames  ProductID ItemID OrderID    You can now access each of DataKeys by providing its index like below   string ProductID   gvMyGridView DataKeys gvr RowIndex  Values 0  ToString    string ItemID   gvMyGridView DataKeys gvr RowIndex  Values 1  ToString    string OrderID   gvMyGridView DataKeys gvr RowIndex  Values 2  ToString      You can also use Key Name instead of its index to get the values from DataKeyNames collection like below   string ProductID   gvMyGridView DataKeys gvr RowIndex  Values  ProductID   ToString    string ItemID   gvMyGridView DataKeys gvr RowIndex  Values  ItemID   ToString    string OrderID   gvMyGridView DataKeys gvr RowIndex  Values  OrderID   ToString

User · Answer

On the Button   CommandArgument   lt    Eval  myKey    gt     On the Server Event  e CommandArgument

User · Answer

I managed to get the value of the DataKeys using this code   In the GridView I added   DataKeyNames  ID  OnRowCommand  myRowCommand    Then in my row command function   protected void myRowCommand object sender  GridViewCommandEventArgs e         LinkButton lnkBtn    LinkButton e CommandSource        the button     GridViewRow myRow    GridViewRow lnkBtn Parent Parent      the row     GridView myGrid    GridView sender     the gridview     string ID   myGrid DataKeys myRow RowIndex  Value ToString       value of the datakey       switch  e CommandName              case  cmd1            do something using the ID       break        case  cmd2            do something else using the ID       break

User · Answer

you can just do this   string id   GridName DataKeys Convert ToInt32 e CommandArgument   Value ToString

User · Answer

I usually pass the RowIndex via CommandArgument and use it to retrieve the DataKey value I want   On the Button   CommandArgument   lt    DataBinder Eval Container   RowIndex     gt     On the Server Event  int rowIndex   int Parse e CommandArgument ToString     string val    string this grid DataKeys rowIndex   myKey

[asp.net] Get DataKey values in GridView RowCommand

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