gridview添加新行

Question

I have a gridview with item templates bound to an sql data source. I need to add a new row on the textchanged event of my last textbox itemtemplate in the specific row. the problem is when i add a new row, the previous row values, entered by me are not displayed. Can someone please give me the code to retain those values. please keep the code in c#.

thanks

SqlDataAdapter ddm = new SqlDataAdapter(cdm);
DataTable dss = new DataTable();
ddm.Fill(dss);
GridView1.DataSource = dss;
GridView1.DataBind();
for (int i = 0; i <= dss.Rows.Count - 1; i++)
{
   DropDownList dd1 = (DropDownList)GridView1.Rows[i].Cells[1].FindControl("ddl1");

   dd1.DataSource = dss;
   dd1.DataTextField = "Material_Details";
   dd1.DataBind();
}

cn.Close();
//code for new row

DataRow dr = dss.NewRow;
dss.Rows.Add(dr); 

Answer 1

From what I understand, you are entering values and then trigger a post-back that adds a new row. You need during the post-back to grab the values you entered and save / redisplay them, or they are lost.

You save them the same as any other way, by looking for their _Changed event handlers (or in Load() with an if(IsPostBack){ save values } ) and saving them / adding them to your DataTable to be displayed in the grid when you re-bind it.