问题描述
你好朋友和教授
程序环境：C#语言的Windows Form应用程序
使用的组件是 Telerik，当然，如果没有 Telerik 也没什么大不了的；)
目标：我想从数据库创建一个产品条目表单，可以通过radmulticombobox元素在radgrid中添加来自sql db的信息。
问题：单独添加产品代码或产品名称时效果很好，但不能同时添加在同一行
我使用 linq 语句，这是我的代码和屏幕截图：
<pre>
using System;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using Telerik.WinControls;
using Telerik.WinControls.Data;
using Telerik.WinControls.UI;
namespace program0
{
public partial class Form9 : Form
{
public Form9()
{
InitializeComponent();
}
linqDataContext db = new linqDataContext();
GridViewMultiComboBoxColumn ProductCode = new GridViewMultiComboBoxColumn("productCode");
GridViewMultiComboBoxColumn ProductName = new GridViewMultiComboBoxColumn("productName");
RadMultiColumnComboBoxElement mccbEl = new RadMultiColumnComboBoxElement();
private void Form9_Load(object sender,EventArgs e)
{
var dtpcode = (from a in db.StockProductLists
where a.FiscalYearYear == "2020"
orderby a.ProductCode
select new
{
ProductCode = a.ProductCode,ProductName = a.ProductName,PackQty = a.PackQty,OnHandUnitQty = a.OnHandUnitQty,});
ProductCode.DataSource = dtpcode;
ProductCode.DisplayMember = "ProductCode";
ProductCode.ValueMember = "ProductName";
ProductCode.DropDownStyle = Telerik.WinControls.RadDropDownStyle.DropDown;
ProductCode.FilteringMode = GridViewFilteringMode.DisplayMember;
radGridView1.Columns.Add(ProductCode);
var dtpname = (from a in db.StockProductLists
where a.FiscalYearYear == "2020"
orderby a.ProductCode
select new
{
ProductCode = a.ProductCode,});
ProductName.DataSource = dtpname;
ProductName.DisplayMember = "ProductName";
ProductName.ValueMember = "ProductCode";
ProductName.DropDownStyle = Telerik.WinControls.RadDropDownStyle.DropDown;
ProductName.FilteringMode = GridViewFilteringMode.DisplayMember;
radGridView1.Columns.Add(ProductName);
radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
}
private void radGridView1_CellEditorInitialized(object sender,GridViewCellEventArgs e)
{
mccbEl = e.ActiveEditor as RadMultiColumnComboBoxElement;
if (mccbEl != null)
{
mccbEl.Columns[0].HeaderText = "productCode";
mccbEl.Columns[1].HeaderText = "productName";
mccbEl.Columns[2].HeaderText = "package";
mccbEl.Columns[3].HeaderText = "single";
mccbEl.BestFitColumns();
mccbEl.EditorControl.Columns[0].HeaderText = "productCode";
mccbEl.DropDownSizingMode = SizingMode.UpDownAndRightBottom;
mccbEl.DropDownMinSize = new Size(550,300);
mccbEl.DropDownMaxSize = new Size(550,300);
mccbEl.AutoSizeDropDownToBestFit = false;
mccbEl.DropDownAnimationEnabled = false;
mccbEl.AutoFilter = true;
FilterDescriptor filterDescriptor = new FilterDescriptor(mccbEl.DisplayMember,FilterOperator.Contains,string.Empty);
mccbEl.EditorControl.MasterTemplate.FilterDescript ors.Add(filterDescriptor);
}
}
}
}
</pre>
我做了一些修改，但是添加新行时出现问题，产品代码和产品名称为空！
using System;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using Telerik.WinControls;
using Telerik.WinControls.Data;
using Telerik.WinControls.UI;
namespace program0
{
public partial class Form9 : Form
{
public Form9()
{
InitializeComponent();
}
linqDataContext db = new linqDataContext();
GridViewMultiComboBoxColumn ProductCode = new GridViewMultiComboBoxColumn("productCode");
new GridViewMultiComboBoxColumn ProductName = new GridViewMultiComboBoxColumn("ProductName");
RadMultiColumnComboBoxElement mccbEl = new RadMultiColumnComboBoxElement();
public IQueryable StockProductList ;
public string FiscalYear = "2020";
public string code;
public string name;
private void Form9_Load(object sender,EventArgs e)
{
StockProductList = (from a in db.StockProductLists
where a.FiscalYearYear == FiscalYear
orderby a.ProductCode
select new
{
ProductCode = a.ProductCode,QtyPerPack = a.QtyPerPack,shell = a.OnHandPackQty,single = a.OnHandUnitQty,OnHandQty = a.OnHandQty
});
ProductCode.DropDownStyle = Telerik.WinControls.RsingleropDownStyle.DropDown;
ProductName.DropDownStyle = Telerik.WinControls.RsingleropDownStyle.DropDown;
ProductCode.FilteringMode = GridViewFilteringMode.DisplayMember;
ProductName.FilteringMode = GridViewFilteringMode.DisplayMember;
radGridView1.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
radGridView1.NewRowEnterKeyMode = RadGridViewNewRowEnterKeyMode.EnterMovesToNextCell;
radGridView1.Columns.single(ProductCode);
radGridView1.Columns.single(ProductName);
radGridView1.Columns.single("Number_in_the_box");
radGridView1.Columns.single("shell");
radGridView1.Columns.single("single");
radGridView1.Columns.single("total");
rbtn_1.Checked = true;
}
private void radGridView1_CellEditorInitialized(object sender,GridViewCellEventArgs e)
{
if (rbtn_0.Checked && e.ColumnIndex == 0)
{
mccbEl = e.ActiveEditor as RadMultiColumnComboBoxElement;
if (mccbEl != null)
{
foreach (GridViewDataColumn column in
mccbEl.Columns)
{
column.BestFit();
}
mccbEl.DropDownSizingMode = SizingMode.UpDownAndRightBottom;
mccbEl.DropDownMinSize = new Size(550,300);
mccbEl.DropDownMaxSize = new Size(550,300);
mccbEl.AutoSizeDropDownToBestFit = false;
mccbEl.DropDownAnimationEnabled = false;
mccbEl.AutoFilter = true;
FilterDescriptor filterDescriptor = new FilterDescriptor(mccbEl.DisplayMember,string.Empty);
mccbEl.EditorControl.MasterTemplate.FilterDescriptors.single(filterDescriptor);
mccbEl.TextChanged += MccbEl_TextChanged;
}
}
if (rbtn_1.Checked && e.ColumnIndex == 1)
{
mccbEl = e.ActiveEditor as RadMultiColumnComboBoxElement;
if (mccbEl != null)
{
foreach (GridViewDataColumn column in
mccbEl.Columns)
{
column.BestFit();
}
mccbEl.DropDownSizingMode = SizingMode.UpDownAndRightBottom;
mccbEl.DropDownMinSize = new Size(550,string.Empty);
mccbEl.EditorControl.MasterTemplate.FilterDescriptors.single(filterDescriptor);
mccbEl.TextChanged += MccbEl_TextChanged;
}
}
}
private void MccbEl_TextChanged(object sender,EventArgs e)
{
if (mccbEl != null)
{
radGridView2.DataSource = mccbEl.DataSource;
if (radGridView2.RowCount > 0)
{
foreach (GridViewDataColumn column in
radGridView2.Columns)
{
column.BestFit();
}
radGridView2.AutoSizeColumnsMode = GridViewAutoSizeColumnsMode.Fill;
}
}
}
private void radGridView1_UsersingleingRow(object sender,GridViewRowCancelEventArgs e)
{
if (radGridView2.RowCount > 0)
{
int Number_in_the_box = Convert.ToInt32(radGridView2.CurrentRow.Cells[2].Value.ToString());
int shell1 = Convert.ToInt32(radGridView2.CurrentRow.Cells[3].Value.ToString());
int single1 = Convert.ToInt32(radGridView2.CurrentRow.Cells[4].Value.ToString());
int total1= Convert.ToInt32(radGridView2.CurrentRow.Cells[5].Value.ToString());
if (e.Rows[0].Cells[3].Value == null)
{
e.Rows[0].Cells[3].Value = 0;
}
if (e.Rows[0].Cells[4].Value == null)
{
e.Rows[0].Cells[4].Value = 0;
}
int shell = Convert.ToInt32(e.Rows[0].Cells[3].Value.ToString());
int single = Convert.ToInt32(e.Rows[0].Cells[4].Value.ToString());
int total = shell * Number_in_the_box + single;
if (single == Number_in_the_box)
{
single = 0;
shell++;
}
else if (single > Number_in_the_box)
{
shell = shell + single / Number_in_the_box;
single = single % Number_in_the_box;
}
e.Rows[0].Cells[0].Value = code;
e.Rows[0].Cells[1].Value = name;
e.Rows[0].Cells[2].Value = Number_in_the_box.ToString();
e.Rows[0].Cells[3].Value = shell;
e.Rows[0].Cells[4].Value = single;
e.Rows[0].Cells[5].Value = total;
if (total <= total1)
{
e.Cancel = false;
}
else
{
e.Cancel = true;
}
}
else
{
e.Cancel = true;
}
}
private void rbtn_0_CheckedChanged(object sender,EventArgs e)
{
if (rbtn_0.Checked)
{
ProductCode.DataSource = StockProductList;
ProductCode.DisplayMember = "ProductCode";
ProductCode.ValueMember = "ProductName";
}
if (rbtn_1.Checked)
{
ProductName.DataSource = StockProductList;
ProductName.DisplayMember = "ProductName";
ProductName.ValueMember = "ProductCode";
}
}
}
}
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。
小编邮箱:dio#foxmail.com (将#修改为@）
设置时间 控制面板
错误1：Request method ‘DELETE‘ not supported 错误还原：...