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我想获取GridView的列的特定单元格值,但收到NullReferenceException错误。我不知道为什么,因为我正确使用所有控件并且使用正确的代码。请给我一个关于相同的解决方案。NullReferenceException从GridView获取特定的单元格值
代码:
protected void lnkedit_Click(object sender, EventArgs e)
{
// LinkButton btndetails = sender as LinkButton;
//GridViewRow gvrow = (GridViewRow)btndetails.NamingContainer;
//lblID.Text = gvdetails.DataKeys[gvrow.RowIndex].Value.ToString();
//// lblCompanyName.Text = gvrow.Cells[1].Text;
//txt_ComName.Text = gvrow.Cells[1].Text;
//txt_ShortName.Text = gvrow.Cells[2].Text;
//txt_email.Text = gvrow.Cells[3].Text;
//txt_website.Text = gvrow.Cells[4].Text;
string str = ("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=F:/ATTt/App_Data/eTimeTrackLite1.mdb;Persist Security Info=False;");
OleDbConnection conn = new OleDbConnection(str);
conn.Open();
OleDbCommand cmd = new OleDbCommand();
GridViewRow row = gvdetails.SelectedRow;
string index = row.Cells[0].Text.ToString(); **/*Error occure on this line*/**
cmd.CommandText = "select CompanyId from Companies where CompanyFName = '"+index+"'";
// cmd.Parameters.AddWithValue("@CompanyId", Convert.ToInt32(lblID.Text));
cmd.Connection = conn;
OleDbDataAdapter da = new OleDbDataAdapter();
DataSet ds = new DataSet();
da.Fill(ds);
DataTable dt = new DataTable();
dt = ds.Tables[0];
CompanyId = dt.Rows[0]["CompanyId"].ToString();
// da.UpdateCommand = cmd;
// cmd.ExecuteNonQuery();
this.ModalPopupExtender1.Show();
}
我的网格视图:
在此先感谢。
你检查什么行.Cells [0]包含? –
你可以显示你的aspx代码 –