Question

我目前有一个Gridview，通过从下拉列表中选择一个值来填充。选择值后，将填充gridview，并且我尝试允许用户使用“RowUpdating”事件编辑gridview中的值。但是，我试图根据下拉列表中的值“StockTakeIDNew”更新Gridivew中的值。

这是我的c＃代码。

   protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        try
        {
            using (SqlConnection sqlCon = new SqlConnection(@"Data Source=(local)\;Initial Catalog=SmallBatch;Integrated Security=True;"))
            {
                sqlCon.Open();
                string query = "UPDATE Stock_Take_Item SET BarQuantity=@BarQuantity, StorageQuantity=@StorageQuantity WHERE StockTakeIDNew =@id";
                SqlCommand sqlCmd = new SqlCommand(query, sqlCon);
                sqlCmd.Parameters.AddWithValue("@BarQuantity", (GridView1.Rows[e.RowIndex].FindControl("barQuantityTxt") as TextBox).Text.Trim());
                sqlCmd.Parameters.AddWithValue("@StorageQuantity", (GridView1.Rows[e.RowIndex].FindControl("storageQuantityTxt") as TextBox).Text.Trim());
                sqlCmd.Parameters.AddWithValue("@id", Convert.ToInt32(GridView1.DataKeys[e.RowIndex].Value.ToString()));
                sqlCmd.ExecuteNonQuery();

                String query1 = "SELECT Stock_Take.Username, Item.ItemID, Item.ItemDesc, Stock_Take_Item.BarQuantity, Stock_Take_Item.StorageQuantity, Stock_Take.StockTakeIDNew FROM Item INNER JOIN Stock_Take_Item ON Item.ItemID = Stock_Take_Item.ItemID INNER JOIN Stock_Take ON Stock_Take_Item.StockTakeIDNew = Stock_Take.StockTakeIDNew where Stock_Take.StockTakeIDNew = @DATE";

                SqlConnection con = new SqlConnection(@"Data Source=(local)\;Initial Catalog=SmallBatch;Integrated Security=True;");
                con.Open();
                SqlCommand cmd = new SqlCommand(query1, con);
                DdlUser.SelectedValue.GetType();

                cmd.Parameters.Add("@DATE", SqlDbType.Int).Value = DdlUser.SelectedValue;

                SqlDataReader reader = cmd.ExecuteReader();
                GridView1.DataSource = reader;
                GridView1.DataBind();

            }

        }

我正在使用此代码。我基本上不将@ID值作为.DataKeys，而是来自DDL的SelectedIndexChanged的值。

代码运行，除了我收到错误：指数超出范围。必须是非负数且小于集合的大小。参数名称：index

索引超出范围 - 编辑gridview

0 个答案: