VB.NET DataGridView Not Showing Data - vb.net

Question

I have looked around quite a bit, and nothing seems to answer my question in particular. I have DataGridView in which I add rows and columns dependent on a certain record count of geospatial data that is held in ArcGIS. The data is then passed through to the gridview for editing.
So I do not use any databinding methods, rather it is a very manual process. I store data into a two-dimensional arrays, which indexes are based off of those certain data record counts.
After the loops are complete, the data should be stored in each cell dependent on index. The very last row that was populated is populated perfectly, yet the other 72 (or so) rows are blank.
Here is the code as follows:
This populates column headers (works great):
For i_FieldNum = 0 To pFields_1.FieldCount - 1
str_FieldName = UCase(pFields_1.Field(i_FieldNum).Name)
str_FieldAliasName = pFields_1.Field(i_FieldNum).AliasName
ReDim Preserve m_array_str_FieldNames(i_FieldNum)
ReDim Preserve m_array_str_FieldAliasNames(i_FieldNum)
m_array_str_FieldNames(i_FieldNum) = str_FieldName
m_array_str_FieldAliasNames(i_FieldNum) = str_FieldAliasName
i_FieldCount = i_FieldCount + 1
i_ColNum = i_FieldCount - 1
'If this is the "SHAPE", "FID", or "OBJECTID" field, remember it:
If (str_FieldName = "SHAPE") Then
m_i_FieldNum_Shape = i_FieldCount - 1
ElseIf (str_FieldName = "FID") Then
m_i_FieldNum_FID = i_FieldCount - 1
ElseIf (str_FieldName = "OBJECTID") Then
m_i_FieldNum_OBJECTID = i_FieldCount - 1
End If
'Store the field name in the top row:
grid_Data.ColumnCount = i_FieldCount
grid_Data.Columns.Item(i_ColNum).HeaderText = str_FieldName
ReDim Preserve m_array_l_FieldColLengths(i_ColNum)
m_array_l_FieldColLengths(i_ColNum) = pFields_1.Field(i_FieldNum).Length
Next i_FieldNum
This populates the two-dimensional array:
Do Until pFeat_1 Is Nothing
'Until we run out of features ...
i_FeatCount = i_FeatCount + 1
For i_FieldNum = 0 To pFields_1.FieldCount - 1
'If the field is recorded as a shape
If (i_FieldNum = m_i_FieldNum_Shape) Then
array_Data(i_FeatCount - 1, i_FieldNum) = "<Shape>"
Else
'If the value of the field is null
If IsNothing(pFeat_1.Value(i_FieldNum)) Or pFeat_1.Value(i_FieldNum).ToString = "" Then
array_Data(i_FeatCount - 1, i_FieldNum) = "<Null>"
Else
array_Data(i_FeatCount - 1, i_FieldNum) = pFeat_1.Value(i_FieldNum).ToString
End If
End If
Next i_FieldNum
'End If
'Move to the next feature (if any).
pFeat_1 = pFeatCursor_1.NextFeature
Loop
This is suppose to display the data:
For i_RowNum = 0 To i_FeatCount - 1
'Add a new row to the grid:
grid_Data.RowCount = i_RowNum + 2
For i_ColNum = 0 To pFields_1.FieldCount - 1
grid_Data.Item(i_ColNum, i_RowNum + 1).Value = array_Data(i_RowNum, i_ColNum)
Next i_ColNum
Next i_RowNum
Everything runs and compiles perfectly, although as I stated before, only the last row's data is shown (which is populated properly).
If anyone can help figure out why only one row is populated, it would be more than appreciated.
Thank You,
Logan

Answer 1

Check your updated section -This is suppose to display the data: If you data is correctly set then as per my guess it making grid to show wrong data. Modify it as per your columns in your grid that you have added. Or you can create column names string array to put data in particular cells. as dgvr.Cells(columnsArray[index]).Value = array[,]
For i_RowNum = 0 To i_FeatCount - 1
'Add a new row to the grid:
DataGridViewRow dgvr = new System.Windows.Forms.DataGridViewRow();
dgvr.CreateCells(grid_Data)
For i_ColNum = 0 To pFields_1.FieldCount - 1
dgvr.Cells(i_ColNum).Value = array_Data(i_RowNum, i_ColNum)
Next i_ColNum
grid_Data.Rows.Add(dgvr)
Next i_RowNum
Ref: Adding a New Row to DataGridView and How to: Manipulate
Rows in the Windows Forms DataGridView Control

Answer 2

See here, each time you increment the row count its clearing out the data:
DataGridView1.RowCount += 1
DataGridView1.Item(0, 0).Value = "a value"
DataGridView1.RowCount += 1
DataGridView1.Item(0, 1).Value = "the previous value has been wiped"
To fix your code without any major changes, just use this method to add rows:
grid_Data.Rows.Add(paramArray)
or even easier put this line above the for loop and set the number of rows before you fill them in:
grid_Data.RowCount = i_FeatCount - 1