使用可排序集合的datagrid中的组合框 [英] Combobox in datagrid using sortable collection

问题描述

我正在使用silverlight DataGrid. DataGrid的数据源是SortableCollection.
网格在TemplateColumn中包含ComboBox，使用DataContext将数据添加到组合框.

在Grid_LoadingRow事件中，我们正在执行以下操作:
lcmb是combobox.
lControlDs是数据源.

I am using silverlight DataGrid. DataSource for the DataGrid is SortableCollection.
Grid contains ComboBox in TemplateColumn, using DataContext data is added to combobox.

In Grid_LoadingRow event we are doing the following:
lcmb is combobox.
lControlDs is DataSource.

lCmb.ItemsSource = lControlDS.cDataSourceRowCollection;
lCmb.SelectedValuePath = "[" + lControlDS.lObjControlMappingInfo.SelectedValuePath + "]";

Binding lBinding = new Binding();
lBinding.Source = e.Row.DataContext;

lBinding.Path = new PropertyPath("[" + lControlDS.lObjControlMappingInfo.cControlPropertyMapping[0].RefPropertyName + "]");

lBinding.Mode = BindingMode.TwoWay;
lCmb.SetBinding(ComboBox.SelectedValueProperty, lBinding)

问题是，按预期将行添加到SortableCollection时，将行添加到DataGrid中，但是从单个ComboBox选择值时，对于同一TemplateColumn中的所有其他ComboBox都选择了相同的值.
简而言之，单一选择会影响所有其他组合框.

The problem is, on adding a row to SortableCollection as expected Row gets added to DataGrid, but on selecting value from single ComboBox, for all other ComboBoxes in same TemplateColumn same value gets selected.
I short, single selection is affecting all the other comboboxes.

How to handle this problem, and manage to select/show different value in other comboboxes?

推荐答案

埃里克

XAML的代码:

Hi erik

CODE FOR XAML :

<sdk:datagrid autogeneratecolumns="False" height="100" horizontalalignment="Left" margin="75,80,0,0" name="dataGrid1" verticalalignment="Top" width="231" loadingrow="dataGrid1_LoadingRow" xmlns:sdk="#unknown">
          <sdk:datagrid.columns>
              <sdk:datagridtextcolumn canuserreorder="True" canuserresize="True" canusersort="True">
                                      Header="Sr.No" Width="2*"  Binding="{Binding Path=[ServiceRqstDetailRowId]}"  />

              <sdk:datagridtemplatecolumn header="Service Name">
                  <sdk:datagridtemplatecolumn.celltemplate>
                      <datatemplate>
                          <combobox x:name="cmbService" xmlns:x="#unknown">
                              <combobox.itemtemplate>
                                  <datatemplate>
                                      <textblock x:name="txtServiceName" text="{Binding Path=[ServiceShortName]}" />
                                  </datatemplate>
                              </combobox.itemtemplate>
                          </combobox>

                      </datatemplate>
                  </sdk:datagridtemplatecolumn.celltemplate>
              </sdk:datagridtemplatecolumn>

          </sdk:datagridtextcolumn></sdk:datagrid.columns>
      </sdk:datagrid>

好吧，桑特，我想这就是我所能获得的:
我的问题实际上是在ListView中，但我仍然认为它会适用.
我最终得到了以下可工作的XAML

Ok Sant, I think this is what I''ve got and what I can get:
My issue actually was in a ListView, but I still think it would apply.
I ended up with the following working XAML

<gridviewcolumn header="Gravity Model ID" displaymemberbinding="{Binding Path=GravityModel.Definition.IDGravityModel}" /><gridviewcolumn header="Gravity Model">
<gridviewcolumn.celltemplate>
    <datatemplate>
      <combobox name="cbxGravityModels" itemssource="{Binding Path=GravityModels}">
        SelectedValuePath="Definition.IDGravityModel"
        SelectedValue="{Binding Path=GravityModel.Definition.IDGravityModel}" 
        DisplayMemberPath="Definition.Name">
      </combobox>
    </datatemplate>
  </gridviewcolumn.celltemplate>
</gridviewcolumn>

我认为部分问题可能是第二个数据模板-或更像您建议的那样:问题可能出在两个不同组合框使用相同的源，其中一个不在网格模板中，导致选择了一个反映在其中的组合框全部.
这是我的镜头-希望您能解决它.
干杯
埃里克(Erik)

I think part of you problem could be the second datatemplate - or more likely as you suggested: The problem may lie in using the same source for two different comboboxes one of which is not in the grid template leading to a selection in one reflecting in them all.
This is my shot - hope you sort it out.
Cheers
Erik

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