c＃DataGridview Combobox Comlumn未显示所选值

本文介绍了c＃DataGridview Combobox Comlumn未显示所选值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 我正在使用普通的Datagridview，但我遇到了问题。 这样我在网格中填充数据并向其中添加了combobox列 db.DataEntities ss = new db.DataEntities（）; DataGridview1.DataSource = ss.table1.ToList（）; if （！DataGridview1.Columns.Contains（ dgcolUser）） { DataGridViewComboBoxColumn dgcombocolUser = new DataGridViewComboBoxColumn（）; dgcombocolUser.Name = dgcolUser; var listOfAllUsers = ss.secAccountInformations.ToList（）; dgcombocolUser.DataSource = listOfAllUsers; dgcombocolUser.DisplayMember = AccountName; dgcombocolUser.ValueMember = UserId; DataGridview1.Columns.Add（dgcombocolUser）; } foreach （DataGridViewRow dgr in DataGridview1.Rows） { dgr.Cells [ dgcolUser]。值= dgr。单元格[ PermittedUserId]。值; } 我在MDI父母面前打开此表格 Form1 frm = new Form1（）{MdiParent = MdiForm1}; frm.Show（）; 当我打开表单时它没有在Comboboxcolumn中显示任何选定的值 但是当我打开我的Form frm1而不是它MdiParent它在Combobox列中显示选定的值 Form1 frm = new Form1（ ）; frm.Show（）; 所以这真的发生了，因为它在我没有MdiParnet显示我的表单时显示数据，或者是否有任何其他原因因为它没有发生< br> 请给我更好的建议..因为显示没有MdiParent的形式是无效的解决方案。解决方案 我遇到了同样的问题。我相信你正在填写表格Load事件上的DGV。如果您将该代码移动到Form Activivate，那么这应该在MDI表单中 I am using a normal Datagridview but I have a problem with it.This way I am filling data in my grid and adding combobox column to it db.DataEntities ss = new db.DataEntities(); DataGridview1.DataSource = ss.table1.ToList(); if (!DataGridview1.Columns.Contains("dgcolUser")) { DataGridViewComboBoxColumn dgcombocolUser = new DataGridViewComboBoxColumn(); dgcombocolUser.Name = "dgcolUser"; var listOfAllUsers = ss.secAccountInformations.ToList(); dgcombocolUser.DataSource = listOfAllUsers; dgcombocolUser.DisplayMember = "AccountName"; dgcombocolUser.ValueMember = "UserId"; DataGridview1.Columns.Add(dgcombocolUser); } foreach ( DataGridViewRow dgr in DataGridview1.Rows) { dgr.Cells["dgcolUser"].Value = dgr.Cells["PermittedUserId"].Value; }I am opening this Form in a MDI parentForm1 frm = new Form1() { MdiParent = MdiForm1};frm.Show();when I open my form it not displaying any selected value in ComboboxcolumnBut when I open my Form frm1 not it MdiParent it display selected value in ComboboxcolumnForm1 frm = new Form1();frm.Show();so is this really happen because it shows data when i am showing my form without MdiParnet or is there any other reason due to which it is not happening<br>Please give me better suggesstion.. because showing form without MdiParent is not valid solution. 解决方案 I had the same problem. I believe you are populating the DGV on form Load event. If you move that code to Form Activivate then this should work within MDI form 这篇关于c＃DataGridview Combobox Comlumn未显示所选值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！