Looks like a bug in the Grid.
 
The OnRowClick and OnCellClick both throw the following exception when I click on a row:
 
Unhandled Exception:
Newtonsoft.Json.JsonReaderException: Input string ‘398.5714416503906’ is not a valid integer. Path ‘pageX’, line 1, position 23394.
at Newtonsoft.Json.JsonTextReader.ParseReadNumber(ReadType readType, Char firstChar, Int32 initialPosition)
at Newtonsoft.Json.JsonTextReader.ParseNumber(ReadType readType)
at Newtonsoft.Json.JsonTextReader.ReadNumberValue(ReadType readType)
at Newtonsoft.Json.JsonTextReader.ReadAsInt32()
at Newtonsoft.Json.JsonReader.ReadForType(JsonContract contract, Boolean hasConverter)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonSerializer.Deserialize(JsonReader reader, Type objectType)
at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.DeserializeObject[GridRowClickEventDetail](String value, JsonSerializerSettings settings)
at Newtonsoft.Json.JsonConvert.DeserializeObject[GridRowClickEventDetail](String value)
at Smart.Blazor.Grid.RowClickHandler(String args)
at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__140_1(Object state)
at System.Threading.QueueUserWorkItemCallbackDefaultContext.Execute()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
at System.Threading.ThreadPool.Callback()
ThreadPool Callback threw an unhandled exception of type Newtonsoft.Json.JsonReaderException
 
Given this:
<template id=”colourTemplate”>
<div style=”width: 100%; height:100%;”>
<!– Note: this shows a few designer errors but works–>
<div style=”background:{{value}};”>&nbsp;</div>
</div>
</template>
<Grid @ref=”cdfGrid1″ OnRowClick=@cdf_OnRowClick DataSource=@dsColourDifference Appearance=@appearance>
<Columns>
<Column DataField=”illuminant” Label=”Illuminant”></Column>
<Column DataField=”observer” Label=”Observer”></Column>
<Column DataField=”primary” Label=”Primary”></Column>
<Column DataField=”textile” Label=”Textile”></Column>
<Column DataField=”source1″ Label=”Source1″></Column>
<Column DataField=”notation1″ Label=”Sample1″></Column>
<Column DataField=”source2″ Label=”Source2″></Column>
<Column DataField=”notation2″ Label=”Sample2″></Column>
<Column DataField=”sample1″ Label=”Colour1″ Template=”@colourTemplate”></Column>
<Column DataField=”sample2″ Label=”Colour2″ Template=”@colourTemplate”></Column>
<Column Visible=@CIE94 DataField=”CIE94″ Label=”CIE 94″></Column>
<Column Visible=@CIED2000 DataField=”CIED2000″ Label=”CIE D2000″></Column>
<Column Visible=@CIELab DataField=”CIELab” Label=”CIELab”></Column>
<Column Visible=@CIELuv DataField=”CIELuv” Label=”CIELuv”></Column>
<Column Visible=@CMC DataField=”CMC” Label=”CMC(l:c)”></Column>
<Column Visible=@DIN99 DataField=”DIN99″ Label=”DIN99″></Column>
<Column Visible=@FMC1 DataField=”FMC1″ Label=”FMC1″></Column>
<Column Visible=@FMC2 DataField=”FMC2″ Label=”FMC2″></Column>
<Column Visible=@HunterLab DataField=”HunterLab” Label=”HunterLab”></Column>
<Column DataField=”Status” Label=”Status”></Column>
</Columns>
</Grid>